Hear! Hear! No, moving your infrastructure to managed services doesn't make sense in all cases. You need to be in the right place in term of complexity and traffic to really benefit from it. It's less common than you'd think due to the marketing pressure.

This is definitely a good musing on when not to go for "cloudy architectures". Most often people don't really need it, this needs to be properly thought out for each project. There are costs involved which you might not make sense to pay for in your context.