You can spend $100B on a assets but it doesn't mean you'll turn a profit.
Capitalism certainly favors those with the most... capital, but there are quite a few other factors. Market fit, efficiency, etc. The Dutch East India Company had the most assets, yes, but also the best ships and a killer (literally) business model.
The notion of a sector where success is determined almost entirely by who can stockpile the most assets (GPUs in this case) is a somewhat unique situation and probably merits its own term
That's an interesting neologism, but the existing term for "rule by whoever controls the most expensive assets" is "capitalism"