Most of the bookshops closed, because Amazon sell books cheaper.
In some countries, most of the electronics shops closed because people can buy the products on line cheaper.
Berlin, with a thriving gay scene, was down to just one gay sauna when I was last there a couple of years ago.
London still had a few scruffy saunas pre-covid, but they didn't seem to attract many younger customers.
Perhaps people discovered they can get what they want on a phone app ? Rather than paying almost £20 to visit a sauna, then finding the sauna is having a quiet night.
I cannot say I like this, but it's another change we might just need to adapt to.