Tech part was "good enough" for last 20+ years - it's why most companies call their tech teams "IT department".

There is however something about that last 5-10% where moving a few bits around the right way gives you business advantage, over places like Disney.

That said, it does seem like some of this Netflix stuff is overbuilt, although I don't need to run tens of 1000's of ec2, so maybe it's worth it.