I'm not sure -- I think it just a patience vs. money trade off.
Which levels are you talking about? Definitely there are levels where it all comes down to luck, but even with 0.5% of winning, you'll probably get there after a couple hundred games. I'm not even sure it's a good business decision for them, more like poor design imo -- I suspect there are more people who get frustrated and quit than those who actually pay...
The levels I'm thinking of are the ones that require 200 green or multiple combos of special candies. Add in the chocolate things and the tornadoes and it just gets worse.
I don't know if it was poor design or purposeful to get more money out of people, but I tend to think the latter because of just how many places it begs to buy things.
People probably do get frustrated and quit. I know that's what I end up doing. Especially when my gaming habits are 30 minutes here and there. I just want a short session, not play for 5 minutes and have to pay more or wait 30 minutes to play more.
Which levels are you talking about? Definitely there are levels where it all comes down to luck, but even with 0.5% of winning, you'll probably get there after a couple hundred games. I'm not even sure it's a good business decision for them, more like poor design imo -- I suspect there are more people who get frustrated and quit than those who actually pay...