Obamacare was based on lies by Obama
President’s weekly address, June 6, 2009: "If you like the plan you have, you can keep it. If you like the doctor you have, you can keep your doctor, too. The only change you’ll see are falling costs as our reforms take hold."
That was a lie.
Obama in 2013:
“Just visit healthcare.gov, and there you can compare insurance plans, side by side, the same way you’d shop for a plane ticket on Kayak or a TV on Amazon. You enter some basic information, you’ll be presented with a list of quality, affordable plans that are available in your area, with clear descriptions of what each plan covers, and what it will cost. You’ll find more choices, more competition, and in many cases, lower prices.”
That was a lie. In many states, there is a sole provider for obamacare.
Many people found that it was cheaper (and better) to buy non-Obamacare insurance and pay the penalty (sorry, tax), and that penalty was incredibly unpopular. That's how we got to where we are now.
Obamacare did not work as advertised. If it had, all those people wouldn't have paid the penalty (sorry, tax) to opt out and buy insurance elsewhere