Yes, both of us are over 65.
The insurance was a high end PPO with no lifetime max and $20 copay. My wife is a cancer survivor, and I take drugs to minimize my cancer risk.
Additionally, the premium growth rate accelerated considerably after 65.
We did not actually pay $85k for a year but that was going to be the price. We were told what the new premiums would be, and instead of paying the $85k (paid monthly in installments), I switched immediately to the MA plan and told my wife, let's see how this works out. She held on for six months, then ran into the stalling, and then it took her another six months before she could get on the same MA plan.
The reason our MA plan works is that it's offered by the same medical center we happened to use 100% of the time on our previous insurance. So we didn't need to switch any physicians.
Regarding predatory MA's, my wife's surgeon, who was trying to get the approval for her surgery, told her, "This isn't going anywhere, you're past the time to switch to medicare, get an MA. However, be sure you avoid these companies."
Yes, we switched to medicare late, and we are reminded of that every month when we pay the penalty.
(I should mention our current MA plan is a HMO, not a PPO -- my typo.)