With what ROI? This isn't charity.
It's hard to put in numbers because it depends on the software that will be built. A single marginally popular software adding or improving GPU-acceleration could easily increase GPU sales by $2M/year
NVidia is not to blame when others fail to execute and aren't able to provide the same polyglot level and IDE integrations as NVidia.
They don't have any issues trying to keep up with demand, on the contrary, there aren't enough of them to sell.