What's wrong with them? If you happen to have some sort of microsoft dependency, they are a good choice for you. Not perfect, as any other cloud provider, but a good choice nonetheless.
Microsoft, meanwhile, is moving towards synapse and fabric which is just everything you need in one spot, (more) easily integrated. I'm not saying it's perfect, but the vast, majority of companies I've worked with don't have the expertise or desire to put together some bespoke architecture taking into consideration the 5 options they have every single step along the way. They want something they can use out of the box.