[ExpatCanuck]

Because Obama requires everyone to be enrolled in a plan with certain required specific benefits.

Remove the mandate requiring mandatory enrollment in Obamacare, change nothing else in Obamacare and let the market decide. Subsidies to those getting them will be meaningless if all providers eventually opt out of Obamacare.

[mlo]

"Remove the mandate requiring mandatory enrollment in Obamacare..."

One doesn't enroll in Obamacare. It's not an insurance plan. Obamacare is the whole set of laws and regulations that govern the health insurance and health care industries.

[circlecity]

"Remove the mandate requiring mandatory enrollment in Obamacare, change nothing else in Obamacare and let the market decide."

You would still have to remove the mandatory benefits for any policy and almost certainly the pre-existing condition provisions.