Tesla and SpaceX announced an initial $16.8 billion investment to build a chip plant in Texas, with a design calling for 100 million square feet of manufacturing space.
The stated justification is their own demand. According to the companies, their combined requirement is projected to exceed one terawatt of compute per year, comfortably beyond current global supply. The two, together with another company in the same orbit, already consume a significant share of the contract manufacturing capacity available on the market.
The reasoning behind the number is the declared bet that robots take over human tasks, autonomous vehicles do the driving and satellites serve as data centres. Each of those requires processing capacity at a scale current production doesn't support.
Building your own chip is the extreme version of a move that appeared elsewhere in the sector this week: those depending on scarce capacity are trying to leave the queue rather than negotiate a place in it.
Timing is the counterpoint. A semiconductor fab takes years between announcement and volume production, which means the relief, if it comes, does nothing for the shortage squeezing the market now.