Spring won. Why would anyone want to learn the standard aside from it being a standard that few people use? Spring itself is a wildly adopted standard. It is a semi open standard in that anyone can use it freely, but in that it's not supposed to be implemented by others.
The same is true for Micronaught or Quarkus. Learn the frameworks. But they are not a new open standard.
There's nothing to be gained by picking a winner, especially if it doesn't really matter because the important APIs are the same.
Newer frameworks like Quarkus are specifically built for container usage and applications built with it are a bit faster and smaller than Spring boot.
Except people keep forgetting they implement the standards on their very foundation.
> Spring won. Why would anyone want to learn the standard aside from it being a standard that few people use?
People don't really talk about Jakarta EE as "the standard". Haven't been doing that for quite some time.
You learn it so you don't hand Spring the ultimate monopoly. I thought we all didn't like monopolies? Why give Broadcom one?