I don't think its 95% , JMHO...
Don't most serious bettors get better as the years go by?
If you don't chase (which is where I am guessing most people hit the wall) you can't really lose much if you flat bet and use common sense....I had one really crummy year ( AND IT WAS BECAUSE I CHASED BIG TIME 3 YEARS AGO) , other than that its been good, last year was tremendous, this year I haven't done much either way...
I wonder why so many keep doing it if 95% lose...
I don't play casino games...Now that to me is like throwing money down the drain....sports betting you have a very good chance to win if you just DON'T CHASE.