[pjmlp]

It has always been like that.

Java attributes and compiler plugins took their inspiration from .NET early version.

Default method interfaces in C# come from Java, LINQ vs streams, JIT / PGO caches,...

That is why it is still relatively easy to do consulting across both platforms.

[oaiey]

I think the interaction between the small c# design team vs. JEP process plays hand in hand.