It'd be hard to get me back. First of all, you'd have to make a movie I want to see. Maybe screen some retros too since good movies can't be made anymore apparently. (I'm sure they could they just don't because they just want Marvel.)
Even then, you'd have to make the theater itself more attractive than piracy. For starters, cheaper. I'm not above paying for the experience of going but not that goddamn much. Maybe add a pinball machine or two like the good ol' days, or even Time Crisis. Hell a little lounge area with that, maybe a bar and some bar food at a reasonable price, I'll go see two and chill in the lounge in between, fuck it.
But the biggest thing is that would have to be reasonably priced and that's never going to happen while the industry continues to huff its own farts into its grave.