Thanks James for your valuable inputs.
Indeed, it’s fact that Wikipedia writers/contributors charge extravagantly through backdoor channels to promote brands, PR politicians, for backlinks and for other purposes. In fact, it’s likely that you’re referring an investigative report done by The Atlantic back in 2015.
However, such practices are unethical. And are NOT condoned by the Wikimedia Foundation. In fact, the organization has set many checks and measures to counter such practices. It has even denied access to thousands of such individuals and agencies who partake in, what is, “selling slots” on Wikipedia, the most relied upon website on the internet for information. And, if you run through their terms and conditions, they can even sue such individuals/agencies who get involved in such malpractice.
So, I cared less about this underground industry of Wikipedia contributors that still breeds.
Besides, it clearly falls outside the scope of the give question. It asks “why” Wikipedia writers are paid high and NOT ‘how’.
But certainly, the points you mentioned are legit and are rather interesting to have a discussions on.