Because if they decide to play they are allowed to do so and they should know it since the beginning. Because those players waste their time and resources on your site.
Again, I highly advise you to educate yourself on running a business or ask successful business owners about it. You are making statements that are completely backwards. Economically, anything other than reviewing when necessary is a mistake unless regulation requires otherwise.
Or people that lose and therefore are unable to cause an action that breaks the TOS (the relevant part here) to begin with? You need to learn a thing or two about running a business.
This question contains a wrong statement ( the bolded part).
Their TOS clearly state : "You are allowed to register only one Account. Registering and operating multiple Accounts (more than one) is strictly prohibited."
You are right, I was wrong. I am glad I put a question mark there as I was not fully sure/misread that quickly.
However I find putting all your strength into play only when the player wins is a bit unethical way to run a business.
What are you blabbing on about? You are obligated to run a business this way, especially if you are a public limited company (not the case here). You have a duty to investors to make profit, not a duty to satisfy customers (not that this isn't a requirement for a successful business). Every single exchange will make it a nightmare for you when you try to withdraw, and not a single one will ask you anything when you deposit (maybe a couple basic KYC). Are you stating all these exchanges are unethical? If so, I do not see you going after them - therefore no case.
I believe you and others will be safe if you create your account at home, then go to public Wifi to bet. There are other FJ's users bet on the public wifi but if they don't find any prove of same betting behaviours, you will be safe.
The number of false positives is very minuscule and can be trivially resolved if the only factor is the same IP. People who bring forth these claims usually have triggered several other risk-factors and many gullible members fall for their cases.
The best way to prevent this is to not play on FJ!
You are free to play somewhere else, and leave this thread if it is of no interest to you.