Sure, it's possible.
You can make $300-400 a day trading one futures contract in an account with $10 or $20k. I mean actual trading, not SCT fake trading 3x-daily-range-profit jack hershey "trading".
I don't understand how people can screw up the math so badly.
The problem is coming up with a system that works well.
It's not like you NEED $50k in order to make $400 per day.
The only way I could see it being the case that you NEED $50k in order to make that much money is if you're averaging down and you NEED $50k in drawdown in order to average out to your $400 per day.
But if you subscribe to the idea that you can make $300-400 a day trading one contract (no scaling, no averaging down), then all you really need is $5 or $10k to cover the margin and you're fine.
But nobody wants to admit that's possible. They need $200k in their account to make $400 per day because they use weird ass scaling methods that require huge margins.
Finally, it's not about PERCENTAGE. It drives me nuts when people mention this.
Assume two traders: one has a $10k account, one has a $50k account. They each trade 1 contract. They each make $300 a day for a week. They each made $1,500. They each did exactly the same performance. % is irrelevant.