I doubt that any court would consider a half-rack in someone's closet to be a "datacenter", nor would I expect Nvidia to enforce that EULA term against a hobbyist.
> ends up creating a billion dollar business,
> that's leverage Nvidia has for a lawsuit.
A great problem to have. Maybe first concentrate on creating a billion dollar business and by that time you can afford to get some 'approved' cards.. ;)
They (NVidia) don't have any recompense beyond withdrawing support. The ELUA is on the (free) drivers, so a court would find no monetary damages. (IANAL etc)