While I agree that AWS pricing and UI can be a nightmare for individuals to understand, at every mid to large enterprise I've worked at they simply haven't care

While I agree that AWS pricing and UI can be a nightmare for individuals to understand, at every mid to large enterprise I've worked at they simply haven't cared - a corporate card is entered in an admin screen somewhere and forgotten about. I honestly don't think this matters to most serious AWS (ie paying substantial amounts of money) customers as much as it maybe matters to individuals looking for a 5 buck VPS to host a side project on. The small players like Digital Ocean/Linode/etc exist and cater more easily for this business if you want it, and it doesn't seem to be helping them make major inroads against the big three.