You're replacing the word hire with buy. That misconstrues the comment. If you need to do GPGPU compute and have never done it, you work with a team that has. (And if you want to build it in house, you scale to it.)

Which is valid? If your problem can be solved by writing a check, then it's the easiest problem to have on the planet.

Netflix didn't have to put out 3 PhD dissertations on how to improve the SOTA of live streaming, they only needed to reliably broadcast a fight for a couple hours.

That is a solved problem.

Amazon and Cloudflare do that for you as a service(!). Twitch and YouTube do it literally every day. Even X started doing it recently so.

No excuses for Netflix, tbh.