A lot of good points made in these posts. I think that the fun level at the absolute beginning stages of the two are quite different. You can pick up a video game controller with no knowledge of the game and be able to accomplish some things, have a good time and learn the skills to advance in the game quickly. As opposed to pool where the first time you pick up a cue, you don't know how to stroke, where to aim, hell, you can't even make a damn ball the first couple times you play. So it's easy to get frustrated.
Also, I've never walked into a gaming center and not having taken two steps in the door been approached by someone to get in a game for cash trying to rob me. I have been able to go to very few pool rooms or tournaments where if I have a cue with me, Some greaseball is asking me to gamble before I even have seen a table.
I have an aquaintence that is that very person. If he sees someone playing, he is quick to go over and either let them know how bad they are or try to get them to play him for money. Most people don't want that hassle and can enjoy a evening playing madden, or halo with there buddies and having a blast.. Just my 2 cents