ROI is missing the point, what matters is what it could be done for and what it was done for. Spending 10x as much as needed is an "opportunity cost", they let 9 billion slip for no reason, and this sort of thing companies on the downslope do. The prime example would be Apple, it's spent the past decade not caring that it's near, or at, the biggest company around. Tim kept costs down, continued to wring every penny out of consumers he could, and ended up being rewarded for it by fighting for the biggest publicly listed company around.
Nvidia paying out million dollar+ salaries to employees is great for the employees. But by accounts of people working with them it's made some of those same managers/high level employees tend towards slacking off and not caring. They've got their house paid off and enough in stock options to retire today, what do they care if the company succeeds a bit more or a bit less? They don't anymore, but these are the very people Nvidia would be relying on the keep growing.
Which is why I'm going to guess Blackwell consumer isn't going to be super impressive either. Enough to fight AMD's hyper truncated RDNA4, and Intel is still struggling with software and perception with Battlemage. Not like they're going to collapse quite yet (let's see what RDNA5 is). But as a 2 year update probably not the most impressive thing around.
You’re jumping to a lot of conclusions there based on no hard data. Nvidia didn’t pay out million dollar salaries. The shares that employees already own appreciated significantly. The whole lazy rich employee thing is probably real but we have no idea if there will be any tangible impact to their roadmap. Lots of companies have made employees rich without crashing and burning after.