Optimus and the US$40 TN question: Can Tesla overtake SpaceX on market cap?

 

The short answer is: yes, Tesla could theoretically surpass SpaceX in market value—but only if its humanoid robot project, Optimus, becomes a massive commercial success. Whether it reaches the kind of numbers sometimes discussed (tens of trillions of dollars) is much more speculative.

🚗 Tesla today vs. 🚀 SpaceX today

• is a publicly traded company whose valuation already reflects expectations for electric vehicles, AI, autonomy, energy storage, and robotics.
• is privately held and has achieved enormous value through launch services, Starlink, and space infrastructure.

At present, Tesla's valuation is heavily influenced by investors' belief that it could become much more than a car company.

🤖 Why Optimus matters

The bullish thesis is that Tesla Optimus could become a general-purpose labor robot used in:

• Manufacturing
• Warehousing
• Logistics
• Retail
• Elder care
• Household assistance

If millions of robots were deployed globally, the revenue opportunity could dwarf the automotive market.

💰 Why people talk about trillions

Supporters argue that:

• The global labor market is worth tens of trillions of dollars annually.
• A successful humanoid robot platform could capture part of that spending.
• Software, AI, and recurring service revenue could create very high profit margins.

This is the source of claims that Tesla could one day be worth many trillions—or even approach figures like $40 trillion.

⚠️ The challenges

Those projections depend on several huge assumptions:

1. Robots become technically capable and reliable.
2. Production scales to millions of units.
3. Costs fall dramatically.
4. Customers adopt them widely.
5. Competitors don't erode margins.

Each of those hurdles is enormous.

🚀 Why SpaceX is different

SpaceX's value is driven by:

• Launch dominance
• Starlink's global satellite internet business
• Future space infrastructure opportunities

Its growth path is more focused and currently more proven than humanoid robotics, though still ambitious.

🎯 Bottom line

Tesla overtaking SpaceX is entirely plausible because Tesla has access to public capital markets and a potentially vast robotics opportunity. However, the idea that Optimus alone could justify a $40 trillion valuation remains highly speculative and depends on breakthroughs in AI, robotics, manufacturing, and global adoption that have not yet been demonstrated at scale.