It really isn't about enforcing it. How do you enforce that is the question that even GPL struggles with.
It's a simple value proposition and a simple premise. If you're commercial, we're commercial. If you're not making money, you can still have it.
Compare that to just someone buying something. Individuals and especially businesses will buy what they need to buy. Imagine someone insisting "you don't have to buy me, but I am hungry". That's not even a business model. I find it's the value proposition is what is broken with most OSS. It's virtue signalling plus relying on donations. NPR does that, except they spend hours on the air begging for money. OSS might work if they were given the airtime too, but usually all the time they have is a few sentences the "shopper" reads before they hit the (free) download button (or enter the git command or whatever).
It's a simple value proposition and a simple premise. If you're commercial, we're commercial. If you're not making money, you can still have it.
Compare that to just someone buying something. Individuals and especially businesses will buy what they need to buy. Imagine someone insisting "you don't have to buy me, but I am hungry". That's not even a business model. I find it's the value proposition is what is broken with most OSS. It's virtue signalling plus relying on donations. NPR does that, except they spend hours on the air begging for money. OSS might work if they were given the airtime too, but usually all the time they have is a few sentences the "shopper" reads before they hit the (free) download button (or enter the git command or whatever).