I've briefly encountered mainframes in the 90s. I thought it was a perfect analogy to AWS where "intelligence" is in the center and we're just piping stuff over the network for AWS to compute. I don't understand how selfhosted/self-provisioned servers is supposedly comparable to a mainframe, on the contrary.

> It's 2022 and we're about to rediscover something we know for 40 years already: mainframes are freaking expensive.

My interpretation: AWS is freaking expensive, AWS is in the center performing all computations; AWS is the mainframe we can well do without.