With full FDA approval of the Pfizer vaccine, I would expect more employers (and maybe venues like restaurants, theaters, etc.) to start requiring vaccines. My employers is not requiring vaccines but is requiring weekly testing for everyone, vaccinated or not. Testing will be a condition of employment. If you refuse a test, you'll be sent home without pay. Continued refusal will result in termination. I wouldn't be surprised if the vaccine becomes required soon.
I think the rising cases, especially in areas with low vaccination rates, is causing more people to get vaccinated. That's a good thing. There will still be those who refuse it, but as more and more employers and venues start to require the vaccine, those anti-vaxxers will be shit out of luck.
It may take this third wave to actually get to the targeted 75%-80% vaccinated rate. It's too bad it has to happen this way, but getting to that magic number was doomed as soon as everything became political. Now it seems it's gone beyond politics into some other realm with Trump being booed when he encouraged his supports to get vaccinated.