Impartial suggestion to consider.
------,

Sacrificial Bets = # % of Winning Profits, but don't make it "law", make it a free choice.

In other words, start at 1 percent of winning profits,
( 100 units profit, bet 1 unit), on a runner that is sure to lose.
That may keep them happy.

One may improvise on the scales to raise or lower their percents.

It's the same principle in mechanical engineering. Your own vehicle has "sacrificial metals" implemented in various situations.
For example; a thermostat housing is made of an alloy weaker than the entire engine's alloy/s. The reason is so the inevitable corrosion will attack the weakest link first.
So it's cheaper to replace the thermostat housing than the entire engine block due to corrosion.

Well, it's "cheaper" to sacrifice part of your profit than to have the entire account closed and gain no profit.