If you ask me what I dont like in "keep trying you will win", then I would say that it is never clear how long should I try or how many attempts to do, and it isnt clear what should be considered as win. If I bet 9 times $1 and lose, but my 10th $1 bet brings me a $2 win, then I would be disappointed and wont keep trying. In this case, it suits for "keep trying and you would win". But I will be expecting with my win to cover all previous losses. To bad, in gambling not always you get what you expect.