The financialization of everything is why we can't have nice things.
Consider a team of people building a house. They have all sorts of things that need focus and work - planning the build, assembling resources, coordinating specialists and doing the actual construction.
Now, add a second team who don't understand anything about what the first team is doing, who the first team have to talk to every time they want to buy a pencil or screw.
How it is that anyone thinks this is a good way to do business is completely beyond me, and yet we have entire schools devoted to training people to do this.
The second group is the “thinkers”. They think for a living. They drink coffee and wear suits. They think things like, “that’s expensive,” sometimes.
The doers can’t think. The thinkers can’t do. By combining the two, we end up with a group who can neither think nor do.
As far as the forking issue, nothing really stops zero-effort forks from seeking compensation. Anyone could fork a project and replace all the donation links in the docs with their own. So if you do want to donate to a project, do a little research.
So then, reserve profit motives for things that need to be done, and for which you can tolerate mere adequacy. I want my garbageman to be motivated by profit, because society would collapse in a week without garbage collection. For things that need to be done well, there's no alternative other than finding someone who actually gives a shit regardless of the profit involved (which isn't to say that they must live in poverty, but rather that profit must be a secondary motivation rather than a primary one; find someone who wants to be doing the work even if they weren't getting paid).
On the margin, there may be many people working in, for example, finance who would make highly valuable contributions to open source projects if they were financially incentivized.
What is effectively being argued here is that we should oppose grass roots subsidy of important public work just because there was a specific incentive issue in a specific initiative. The code doesn't care why you wrote it. Maybe some bad code gets subsidized. That's ok - don't use it.