If it is a privilege, then abusing it ought to have some negative consequences. As I see it, many abuse w/o any negative consequences. And much of the abuse, is well intentioned. And that makes taking action against those posters difficult.
New line of thought. Limit number of posts per day, unless you are considered part of that 20% that people are most interested in listening to. (democratic vote). Heck, most are here to learn, and you do not need to speak to be able to do that. Hold the 80% to 2/3 posts per day limit, but just the posts, not the drinks. Opty