Thanks for talking me down, @SapphireCasino I guess I feel sad at the loss of the innocent optimism of the EU from 20 years ago - although I was probably wearing youthful rose-tinted glasses!
Borders are better than illegal migration... but it's always cheaper and nicer if you can avoid the costs of checks and enforcement, if enough people act as they are meant to anyway!
I think the enshitification we've had over the last 15-20 years has been significantly driven by people choosing not to behave as they are meant to - and the increased costs of that loss of trust-based efficiencies, which we all have to pay.
Eg black market work, benefit fraud (including choosing not to work as hard as you can to support yourself), tax avoidance, compensation culture (screw someone over if you think you can get away with it, just because they are eg a landlord or run a business). There's such a sense of entitlement, and no social accountability.