Will SpaceX IPO Prospectus Be Written By Grok? Mark Cuban Roasts Elon Musk Over His ‘Work Will Be Optional’ Claim

Musk has repeatedly said that AI and robots could make work optional within 10-20 years, driven by Tesla's humanoid robotics.
Elon Musk speaks alongside U.S. President Donald Trump to reporters in the Oval Office on May 30, 2025. (Photo by Kevin Dietsch/Getty Images)
Elon Musk speaks alongside U.S. President Donald Trump to reporters in the Oval Office on May 30, 2025. (Photo by Kevin Dietsch/Getty Images)
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Deepti Sri·Stocktwits
Published Mar 30, 2026   |   4:03 AM EDT
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  • Mark Cuban warned that companies could face risks in securing AI training data and intellectual property for systems like Grok.
  • He also flagged possible future levies, such as a “robot utilization tax” and a “token utilization tax,” that could reshape industry economics.
  • Cuban also joked that AI-driven markets could strain Nasdaq, pushing firms toward tokenized alternatives.

As SpaceX prepares what could become one of the biggest IPOs in history, billionaire Mark Cuban took a jab at Elon Musk’s “work will be optional” claim with a fictional risk section packed with AI-era warnings.

Responding to Musk’s recent post on X that “working will be optional in the future,” Cuban said he “can’t wait to read the Risks section” of a future prospectus, imagining disclosures warning investors that companies could soon be restructuring operations to optimize the replacement of humans with humanoids and AI systems.

Cuban Warns Of Robot Taxes, AI Market Risks

In a satirical draft of what such disclosures might look like, Mark Cuban said on X that companies may one day warn investors their performance could depend on securing intellectual property needed to train AI systems such as Grok. 

He also flagged potential policy risks, saying governments could introduce “robot utilization tax” or “token utilization tax” regimes that could “completely change the economics of our industry and impact our ability to be profitable and offer shareholder returns.”

Cuban added that the disclosures could include: “In an AI driven stock market it is feasible the market infrastructure of the incumbent platform we have chosen, NASDAQ, may not be able to implement AI effectively,” suggesting tokenized alternatives could eventually emerge as backups. He also joked that future filings themselves could be largely machine-generated, writing: “This prospectus was created in a human, AI partnership with 87 percent of the words presented in the prospectus generated by Grok.”

He added that “the future of SEC disclosures is going to be insane” and “contractual protections are going to be insane.”

Musk Bets On Optimus To Reshape Work

Musk has been making similar predictions for months as he pushes deeper into AI and robotics. Speaking at the U.S.-Saudi Investment Forum last year, Musk said advances in AI and robotics could make work optional within the next 10 to 20 years, comparing future employment to optional activities people choose to pursue rather than economic necessity. He also suggested that “money will stop being relevant” in an advanced AI-driven economy.

Musk’s outlook is tied to his push into humanoid robotics through Tesla's Optimus robot, which he has said could become “the biggest product ever,” larger than smartphones and capable of reshaping productivity. Musk has also argued that AI  and robots could eventually “eliminate poverty” by expanding access to goods and services.

SpaceX Targets One Of Biggest IPOs Ever

Cuban’s comments come as investors prepare for possibly one of the largest public-market debuts ever. SpaceX is expected to file a listing any day now that could raise between $40 billion and $80 billion, potentially surpassing the scale of the 2019 Saudi Aramco IPO.

The company has leveraged reusable rocket systems and its fast-growing Starlink broadband network, which now serves more than 10 million users globally, to expand beyond launch services into communications infrastructure and direct-to-device connectivity. SpaceX is also participating in upcoming advanced wireless spectrum auctions alongside carriers including AT&T, Verizon Communications and T-Mobile US.

Starlink’s growth has helped support SpaceX’s $1.3 trillion valuation and Musk’s longer-term plans to build space-based AI data centers powered by solar energy in orbit.

How Do Stocktwits Users Feel About SpaceX?

On Stocktwits, retail sentiment for SpaceX was ‘extremely bullish’ amid ‘extremely high’ message volume.

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SPACEX sentiment and message volume as of March 30 | Source: Stocktwits

One user said that weakness in Rocket Lab USA (RKLB) shares may reflect investors locking in recent gains and “freeing up some capital after these gains to make room for $SPACEX allocation.”

Another user said they are “Feeling so Bullish for Space Stocks right now!”

For updates and corrections, email newsroom[at]stocktwits[dot]com.

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