my experience is that you need a lot of cash and you can even risk that the account is banned (accordingly ToS and AAMS - italian administration - rules).
it's interesting these kinds of bets but requires to much cash in advance and I don't know how these can works in "long time".
Long term, you just switch sportsbooks or form a group of people who can make the bet for you. Ideally, Sportsbook shouldn't limit players because they are using arbitrage but it's considered similar to card counting I suppose, which casinos don't allow either. It does require a lot of cash in advance if you want to make a lot of money but you don't need to start it that way. $200-$300 might work too but it will be a long grind. As the OP suggested, he just gets limited at sportsbooks but not banned. Which is good but especially with crypto being involved, it is harder to trust someone with your own funds. Make your own call.