I care about my privacy. Why should I care about profitability of startup that violates it.

The answer is pretty simple: Privacy matters more.

There are millions of ways for profit but you only have one privacy.

Privacy doesn't matter and GDPR is not a solution.

Your privacy may not matter to you. For most of us here, though, our privacy matters to us. So "privacy doesn't matter" seems like a rather incorrect generalization.

Regardless of what we preach the fact of the matter is that privacy has been eroded to hell and back. These governments that have eroded it were (mostly) duly elected by the people. If this is what the representation of the people is, then well, Privacy doesn't actually matter. Welcome to democracy, etc.

to anybody but a fringe minority.

Do you live in a glass house?

Logic clearly dictates that the needs of the many outweigh the needs of the few.

Indeed. But the many what?

From what I've seen in this world, the needs of the many-monied individuals outweigh the needs of the few-monied masses.

"Won't someone think of the employees" is a common tactic companies use to avoid shutdowns, and that's against long standing laws and regulations. Seems to work often enough too.

So find at least one EU citizen in their database and unleash the GDPR against them?

How would an EU law apply to a U.S. company if it has no assets or operations in an EU jurisdiction?

It applies if they work with PII of EU citizens. It might be to difficult to enforce the rules, but that is a different matter.