More than 90% of the traders trying such a paid challenge fail on the 5% or 10% loss limits or on other rules to avoid to violate the loss limits.
More than 75% of all retail traders lose money.
Would you fund somebody without sharing his losses when he just tells you that he can trade?
A lot of traders are seen on social trading platforms as signal providers and not seen anymore when they burned enough money of their followers.
These challenges of the prop firms are also a business model.
The service for the platforms, the evaluation of the results and supervising the rules cost money.
Some of the prop firms can pay the "funded" traders only from the fees of the others.
Others really fund the trader if he has proven that his skills can work for profit.
Profit is not all needed for a challenge and to be welcomed as a funded trader.
If you were working for an investment fund or a money manager as trader, you also have to follow their rules and limits.
You can also start with others like
BluFx where you pay a monthly fee for their service and their instant funding.
But also they have their rules to stop out losers.