Sure, I can "swim when thrown into the cold water", but you have to be a masochist to like that kind of job. It sucks. I won't do it if I don't have to, and luckily I don't have to.

It pays better than the alternatives and some freedom moving between technologies, which tend to be product development with an expiration date, until the company gets acquired or decides to offshore the team.

Contrary to product companies you also get to jump technologies without having an HR department sending the application into the garbage because one doesn't tick all the boxes on a specific stack.