Religious practice is incredibly varied. And unless the rule is "don't be religious," religious people will try to be flexible. Christians have an obligation to gather, but many churches can satisfy that obligation with a 15 minute service, no singing, and ample distancing, if those are the rules.

Theaters, concerts, and theatrical performances have a harder time changing the product. "Wonder Woman 1984 in 15 Minutes" doesn't sell. Cutting a college lecture down to 20 minutes doubles or triples the number of lectures needed to cover the material.