Calling it "tax evasion" is probably incorrect, since foreign owners are exploiting the rules in a way that is technically correct, but not anticipated. The solution is first to fix the rules, and then, of course, to enforce them.

Obviously the long-term solution is to assume that people will always exploit any tax law as aggressively as they can, and that there's a basically-unlimited supply of people looking to park money in low-tax jurisdictions if they are allowed to do so. I don't think this was necessarily widely appreciated when many jurisdictions' tax laws were written.