It is a good strategy, if you aim for winning Dip Points - it is probably a widely accepted strategy over on WebDip. However, it isn't really used here for several reasons;
1) Nobody really cares about DPoints. People prefer to focus on their stats, which don't change depending on how big a pot any game is.
2) You wouldn't be able to play many games at a time, and most people here like to play multiple games simulaneously.
3) 100 DPoint games, especially on WebDip, tend to attract the sort of newbies who NMR instantly. It's probably because they don't really care about their points or the game, so they bet it all instantly (I'm not labeling you as one of these, just saying that's what happens). That's why most professional WebDip games have 101 point bets; so these people can't join.
4) A lot of the variants on this site are slightly unbalanced, so a lot of people won't risk 100
in case they get a bad country (Frisia in NSW for example). I know I said people don't care about DPoints here, but they still don't like losing vast amounts of them through something that is no fault of their own.
5) No-one will join a 100 bet game for the reasons above, so no-one makes them.
I hope that clears things up for you :D