The point I am making is that, in general, the absence of texture, is still in itself texture. If I were to attend a performance of 4'33" in a perfectly sound-proof room, with the sound of the performance being played into the room from the performer in their own perfectly sound-proofed room, and both the performer, and I, were able to not make any meaningful sound, this performance (as close to pure silence as anything can be) would still be the same kind of musical expression as a traditional performance. The only thing that has changed is that the texture of sounds from the crowd, has been replaced by the texture of silence.
To put it in a simpler way, it is very possible to listen to silence in the same way we listen to sound. Therefore if the texture of silence is presented in the same format as other forms of music, it by definition is music in itself.
Why not tho? If you aren't buying merch, and you aren't seeing big dadrock, arena, bands, shows are pretty cheap. Like unless you live in NYC or something, most good artist still tour for like $15~$25, or less, a show. I just go to shows these days instead of buying records.