Why not start a foundation, or even a business where companies and individuals can voluntarily pay for open source software, like an online store? Different pr

Why not start a foundation, or even a business where companies and individuals can voluntarily pay for open source software, like an online store? Different projects have different prices, but you can pay more. The money is forwarded to project maintainers was wages, but a "tax" is applied so that some money is redirected to small but growing projects. Projects that see sufficient income would be certified as having certain level of guaranteed support, based on the fact that they essentially have a staff to maintain the project. The entity would ensure and manage this. Some of the money would be used to fund this process.