It would be popular for a while but it will never have the chances to continue its business overtime, since bankruptcy is waiting ahead. If you are building up a charity business, you could have this kind of percentage, but if you want to see your business soaring high with its unstoppable massive profits, then you have to set it fixed, and that there should be a house edge no matter what.

Casinos are business, so you have to make it work no matter what so that your capital will have the chance to multiply ten times if possible.