This is a manual by one particular consulting firm, and the text of the law. While reading the law may be good, it is really not feasible to understand all the repercussions without consulting a lawyer. While this consulting firm may have a good interpretation of key provisions, they are not actually your attorney, and their incentives cannot be known to really align with yours.

I mean, this isn't rocket science. More regulation is always going to lead to businesses leaving the market. This is not a bad thing, if your country is willing to put up with it. My guess is that the EU will not care about monal exiting the IM market, and their legislature has decided that they want to prioritize this regulation over the efficiency of the IM market. That's fine -- that's the EU's choice to make.

You have pointed me to the entire content of the GDPR. It's 11 chapters, with 99 articles. I'm unashamed to admit that I don't consider even skimming such a document "easy". I was imagining something more along the lines of a one pager with 4-8 bullet points, each of which was easy to address.