Why dont more Ophthos move to canada?

Per this source (that peruses the government's reimbursement to every physician in the country) Ophtho makes an average of 1.2 million/year in Alberta, Canada accepts ACGME training, and their taxes are only 15% for incorporated physicians! It's not even counting the 20 $4k lasik cases that most of them do on the side 1-2 days a month. http://www.canadianhealthcarenetwork.ca/files/2018/03/20-years-compensation-chart.pdf
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Source Type: forums