Almost infinite but still very much finite. If you could get anywhere in the world in seconds, Star Trek transporter style, then demand would level off. The number of people in the world is finite. Once everyone can get where they need to be as easy as sending a text message, we will have different problems to solve.
Hell no. People raised on "jump cut" vlog culture will just start jump cutting in real life. (Before anyone takes offense, they should first read Larry Niven's seminal articles about how Sci-fi authors should extrapolate sociological issues, using teleportation as his prime example.)
One of the consequences of the technology is that immediately spectator value goes off the chart. As soon as people hear about something interesting happening anywhere then there is an an influx of a few million people playing spectator, which as you can imagine, has some consequences.