The orgasmic reactions of the crowd (casuals) to points like that are a key reason they've slowed down everything.
BTW it's common knowledge that at the AO, Wimbledon and USO, the outside courts are quicker than the main stadium courts. Armstrong is a lot faster than Ashe at the US Open. There's a Big Four bias and it stinks.
this is key thing.
They do all this because of people who come to stadiums and buy tickets .
You can watch for example Wimbledon final between Sampras and Ivanisevic and atmosphere there was like in theater or opera.
Thats why they slowed surface to get more this kind of points and keep matches more entertaining.