That's what I was doing with my Pro 200 plan, except sometimes life gets in the way and I had couple weeks where I couldn't.

OpenAI must have statistics on what percentage of people with Pro accounts don't maximize the usage in a given. Even if it a very small percentage that is still income for providing nothing.

When you think about it, it's kind of ridiculous that the usage credit is use-it-or-lose it. It really should roll over.