Yea, you're not the only "insider" here. And you're 100% wrong. Just because you completely misunderstand what those Amazon/MS employees are doing in those buildings doesn't mean that you know what you're talking about.

The big cloud players have the vast majority of their compute and storage hosted out of their own custom built and self-owned data centers. The stuff you see in colos is just the edge locations like Cloudfront and Cloud CDN, or the new-ish offerings like AWS Local Zones (which are a mix between self-owned and colo, depending on how large the local zone is).

Most of this is publicly available by just reading sites like datacenterdynamics.com regularly, btw. No insider knowledge needed.