Amazon's usability is incredibly poor, the web console is barely functional and gives incomprehensible and unhelpful error messages regularly, in addition to just bugging out. It has tons of special cases only documented on some impossible to find product FAQ pages in the style of "this type of a load balancer can only connect with the instance targeting to instances of types ...".

It has incredibly useless features for networking and other common features that literally everyone else does better - boot up an instance in EC2, give it a name "web", then boot up another instance in the same VPC with the name "db", how do you connect between them? You've got two very idiotic ways - direct IP, or with the long "hostname" which also includes the IP and is thus objectively just worse. Alternatively you spend your own precious time in implementing a way to make the machines discoverable to each other using a combination of VPC specific private zone, and setting up startup scripts to register your instances there, giving them decent hostnames, setting up resolv.conf, etc., etc.

Their startup scripts, alert limits, etc. are instance specific and done clearly in wrong ways. Startup script only runs once, and is managed using an incredibly clumsy format. Alert limits often are set in absolute values, which causes issues if you'd just want an alert when e.g. your CPU credits on t* instances drop below 20%.

The only area where others are playing "catch-up", is market share, they are far ahead of AWS in every other way that matters to most people. Their services simply work, and are cheaper.

Azure provides excellent tools that are integrated with each other for easy use for many common purposes, e.g. logging, various error tracing and analytics things, etc. whereas Google provides incredible pricing and simplicity while providing the necessary tools to build easily scalable systems on top.

Free tier is not really a thing that is good about AWS, Google and Azure do better on that regard too, giving a lot more free credits and discounts on e.g. test & dev environments.

The amount of new services doesn't really matter if you never need them, most of them are really bare bones and useless as is, and in more cases you will spend more time making them just barely work for your needs than you would by just using some other system, e.g. that garbage tier monitoring & alerting setup they offer.