> They're selling all their capabilities; using them as a VPS is like using a battleship to cut cheese.

A lot of people do it.

People feel the battleship is safe and familiar. For most businesses the extra cost is not even noticed. Even a small business spending $500/month on hosting instead of $50 is not going to notice.

Also, if something goes wrong (e.g. your AWS region goes down) its far easier to explain to a manager or client that "its Amazon's fault and lots of stuff is down", rather than "its Digital Ocean's fault".