No one wants access to markets that seize money or companies. It is why Venezuela isn’t seeing foreign investment.
If foreign money isn’t coming in your economy us going to be very weak comparatively.
I suspect you do doubt it but I doubt that you have any education in macroeconomics given that your assertions make zero sense IRL.
You do realize that marginal tax rates were about 90% in America before, right? The single biggest reason they aren’t anymore is much like how Walmart keeps their prices low - part of a race to the bottom. You’re right, they will go elsewhere. They didn’t before because there were no good or practical options. And as long as countries do what Ireland did not too long ago, it will continue to be a problem.