It is the left wing position that’s Canada’s system is superior to ours. According to your post that isn’t the case.

According to my posts (plural), the contention that 30-40% would go the the US for health care, might be similar to this:

AI Overview
While it's difficult to pinpoint an exact number for those who would visit a clinic and pay out-of-pocket, a significant portion of Americans have skipped or postponed needed healthcare due to cost, with 36% of adults reporting this in the past 12 months. This includes both insured and uninsured individuals, with uninsured adults being more likely to face this barrier. Ultimately, the number would vary depending on an individual's financial situation, their insurance status, and the specific cost of the service needed.

Uninsured adults: This group is more likely to go without needed care due to cost. In 2023, three in four uninsured adults under age 65 said they had skipped or postponed needed care because of the cost. Over one in five uninsured adults reported forgoing care in the past year due to cost, compared to a much smaller percentage of insured adults (5.1% with private, 7.7% with public). END

And as Wzambon has pointed out Canada has better outcomes. So there's no need to go further.

The rich are not part of the equation.