It was the first 7 years of my career - not my whole career.

Of course there is a large amount of lock in, how else would it work? You're modelling every business process on software, to move away from that would be costly. That's the very nature of software, especially complex software modelling real world complex critical processes. This isn't some ticketing app written in node that you can change as easily as your socks. This is the system that powers the worlds finance systems and supply chains.

I'm aware of the downsides, I've written whole chapters in books about the downsides. DO you think your 22 year old smart arse ignorance is somehow impressing me?

It's easy to hate something that's too complex for you to understand. Idiots have done that throughout history.