With the exception of one major change, the Ebay  feedback system has been running pretty well on  a voluntary basis ever since its conception, and millions of members accept it for what it is.

With boring regularity on a near weekly basis, year in, year out, someone comes along and says that  it should be made compulsory to leave feedback but they never ever come up with a suggestion as to  how Ebay could enforce the “compulsory” rules.

What would be the punishment for miscreants? Does the OP have anything in mind?...........Do they think, as has been suggested many times before that Ebay suspend, members until they leave feedback, or as more than one hot head has suggested, Ebay should permanently ban any member who fails to leave feedback..................so..........untold hundreds of thousands, if not millions, of members who for whatever reason, fail to leave feedback get kicked get kicked out ….......................YEH!......GREAT IDEA! Ebay lose a fortune in revenue to appease the “lets make it compulsory” brigade, who seemingly think that the leaving of feedback is the be all, and end all, of  auction transactions.

Easy to see why Ebay ignore such ill conceived suggestions, and rightly so. They are a business ,and as such are not going to risk losing potentially huge revenue over feedback issues which, it could be argued, is nothing to do with them, it is between the buyer and seller, no one else.

Oh...........Do you remember my mentioning the exception of the one major change ?.................Well just in case the OP is unaware of it, it was introduced a few years ago by Ebay making it a rule that sellers cannot leave negative feedback for buyers.

So.................Let us imagine for one moment that at the OP's behest Ebay make the leaving of feedback compulsory.............A seller who is unhappy with a buyer is left with one option of only  leaving positive feedback (whereas a buyer has three options) Said seller decides that not being able to leave the correct feedback, they will leave none at all, and Ebay come along and say.... Naughty Seller! You failed to leave feedback !...............Your punishment is …......????????????????

See my point OP?