This sounds very similar to the people who chose to believe everything would be back to normal by May of this year.
We have not even hit the second wave in this country and are doing little to mitigate things to stop one. It may realistically be late spring or summer of 2022 before things are back to normal - and the economic hit that will happen as PPP's stop, unemployment payments reduce again (or run out of the 39 weeks) the forced employee retention through Oct 2020, and the foreclosure/eviction moratoriums are lifted will be more than what most people can wrap their head around.
Not to mention what will happen this winter when we have flu and covid hitting at once and people don't want to be bothered because they are tired or confused.
A vaccine for the general population is at least a full year away from distribution. Just to MAKE the quantity needed wont be possible in a few weeks after it has been approved. US will not get first priority over all the other countries so we will be in line with everyone - billions of vaccines will be needed likely every 6-12 months.
You are painting a little too bleak of a picture, the government is already funding on multiple canidates large scale manufacturing. If the Moderna vaccine is approved, and assuming it needs 2 doses come this spring we will have roughly enough to vaccinate half of this country. If the vaccines that have received this funding is approved, we could be back to “normal” when it comes to restrictions on large gatherings and masks by summer 2021. That’s my hope at the moment.