Why is buying of account necessary?

If you have a company and you want to advertise your products, you can buy a copper membership.

If you want to join a signature campaign, you need to build an account for brand new.

Accounts sales and buying if account should not only be discouraged on this forum, it should be banned. This can make someone to be account farming with low quality posts.

For account sellers and buyers, with valid evidence, red tag should follow until the buyer prove to be worthy of the ref tag removal.