Events are everything.
While other vendors were fighting over compute, AWS got on with winning the events ecosystem.
Were they the first to help devs build event based systems? No
Customer pressure is what means this product will get used.
Building the ecosystem doesn't mean building all the services and saying "we do that too".
It means building just enough to allow customers to innovate, and then building services that allow them to innovate faster.
I can work around it easily enough with AWS, and have done for years.
But now it's created, there are so many things I don't have to do.
That's why it's powerful.