You're right that a lot of people lose everything in the hi/lo game. As I see it, now, it would be extremely problematic for regular users to go from 0 sat to reach the minimum 30k sats in order to be able to withdraw sats from freebitcoin.
However, I honestly wouldn't be surprised if there are still users (cheaters) who are still farming free sats on freebitcoin around the clock.
Hi-Lo can be such a bitch sometimes. Few years ago i devised a system, start with 1 satoshi, and on loss, increase by double. I let it run for an hour and made a nice profit.
So i continued to do this for few days and i was few thousand dollars in plus. I beat the system, i thought. Then, i did it once more, and had like 16 losses in a row, and lost everything.
Is it rigged? I dunno. Maybe. But 16 loses in a row, seems a bit odd
You haven't invented anything new. This system is called the Martingale's strategy and is very well known amongst roulette players. It does work until... it doesn't. Basically, sooner or later you will get a streal of losses long enough to clear your pot. The biggest pot I allowed myself to play with was 1,048,576 satoshis. It takes 21 losses in a row to clear it, and yes - after several hours of autobet it eventually happened. Any streak of consequent losses will happen if you only play long enough.