The left should absolutely boycott Papa John's, and Chick Fil A, Longhorn, Red Lobster, Olive Garden, and all the rest. They can stay home and stop eating out all together.
What Papa Johns will do, and all the others is not increase their workforce here, but start expansion in countries that are more hospitable. As the left succeeds franchises will close here and open elsewhere. If the left wants to boycott, let them. All that will do is show these companies that there really isn't a future in the US and they will act accordingly.
You mean like countries with universal government healthcare?
Few do have universal government healthcare. The most successful have a program where the individual pays toward their own healthcare. The communist countries who have already determined that universal government healthcare doesn't work is transitioning into privatization now.