That contract is as as good as a piece of toilet paper. Lets say I violated the terms of the contract. Well, Don is going to have to enforce it. He will have to get an attorney who will then have to find me and serve the papers. Once he gets a judgement in court, then he will have to find a way to collect. Im just a little guy, a small player at the card table, who can run out of the casino and then they will have to chase me down. In fact, I have been sued before and they couldnt find me to serve the papers. Tough luck.
On the other hand, since Don is the casino, there is no place for him to hide.
A retail trader can lose his shirt. All you have to lose here is $5000 which isnt that much cash to lose.
Don is willing to train you where as other places wont or give you a "mentor". The "mentor" is usually a guy who doesnt really care about you, he is concerned with his own book. I work for a prop firm right now and can honestly say that Don has a good setup going. No other firm provides the service he does.
If you play around with 100 grand of your cash in a retail account, then you can lose more then 100 grand. That possibility always exist. However, if you play around with Don's cash, then all you can lose is 5 grand. If Don sues you, dont worry. He has to serve you and, then once its all over, he has to collect.
It is Don who is sitting here with a target on his chest, not you.