Which leads me to the question, are there any reputable bitcoin sports betting exchange sites? And will they suspend/restrict my account too if I profit too much although they won't be affected by my winnings so logically they shouldn't care about it. In fact, since the pool and liqudity get bigger they should even support it. So, is it really the same case with bitcoin exchange sites too so that I should give up betting if I plan on winning in the end?
There are a lot of reputable bitcoin sports betting exchange sites and they are and they are of the majority here, you just have to spend some time to research their reputation and see if it suits your preference, you are not really that good to win all the time and take down the whole gambling site, if you are playing in a big and reputable gambling site, you can win a big amount and cash it out.
I have seen big winnings cashed out, they will not suspend or restrict your account as long as you are playing fair, and they should be happy that the players able to cash out a big amount, it's a good promotional too.