Some of the territories are charging extremely high fees imo therefore the investment to post is high relative to making a comment.
You are absolutely right about that. Territory owners will know if these fees are feasible or not. But for example, Bitcoin-related territories, which are, as we say here, "the chicken of chicken rice," have acceptable publishing costs.
On one occasion, in the territory ~BooksAndArticles, its owner @siggy47, launched a contest to make a post about our Bitcoin journey. Likewise, other owners could launch ideas about which the stackers could publish in a given week, that would help those who do not have a 💡 to start a publication, and it would help the territory and the platform, in short, good for everyone.
They could even do a survey to determine what topics the stackers would like to publish on. These are just ideas that I propose and I do not think that would restrict anyone's freedom of expression, it would only be a suggestion on topics, without incurring a reward.