First, each quantification system has a limit to the maximum amount of money it can carry. Different systems carry different amounts of money. Some systems carry a lot of money, while others carry a little money.
Second, it is difficult to have an excellent quantitative system. It takes many years of research, so 99.9% of the systems sold in the market are unreliable.
If you develop a large capital carrying capacity and have a very good quantitative trading system, you can make a lot of money, but that is a trader's dream and only a few people can realize it.