Both examples you listed are products that are feasibly created by the many small contributors. Many products cannot feasibly be created in such a manner and rely on some manner of income to remain feasible.
There are quite a few content creators that are capable of producing content because their efforts are supported by advertisement. It would be hard for them to operate on the many small contributions-model.
> And usually content created for profit is quite untrustworthy, I prefer content created out of passion.
Few men enjoy the luxury to devote so much time to their passions when other parts of their time are allocated to securing the income they need to feed themselves.
> Also, there's nothing wrong with ads, but they need to be topical to the content at hand, not targeted to users.
This situation would indeed benefit the visitor more; it would not benefit the advertiser, nor the middleman, nor the space where the advertisement stands.
I have a feeling that to some extent this part is made unnecessarily hard due to how the capitalistic economy insists on employing all available resources in “productive” pursuits of producing even more content...
Perhaps not “content” all the time. But surely a lot of resources are spent towards wasteful, if not directly anti-productive, ends. Trading those for more leisure time might very well be a boon for economy
And usually content created for profit is quite untrustworthy, I prefer content created out of passion. It's the ad based content creators who are lacking in diversity, not the passionate creators who go in deep the rabbit hole.
Also, there's nothing wrong with ads, but they need to be topical to the content at hand, not targeted to users.