Because we're not being forced to. We can actually reliably buy/rent software/movies now, without having to drive anywhere and hope the store still carries what we're looking for.
And for software/movies that aren't for sale any longer, we still do copy them. “Abandonware”, it's called.
In your scenario, where the only thing standing between us and post-scarcity paradise is some capitalist's crooked artificial-scarcity scheme, we would be very much forced to.
@argv_minus_one @econads @ian I just say there are tools and possibilities. I would fight tooth and nail against them, but I think there are people who wouldn't give up the current situation without a fight.