Wikipedia, famously a non-profit funded solely by advertising, has consistently expanded for ~20 years, even while embarking on repeated, mostly useless project

Wikipedia, famously a non-profit funded solely by advertising, has consistently expanded for ~20 years, even while embarking on repeated, mostly useless projects unrelated to its current work (why does it need an internal search engine? it can already show a listing of related pages on its dominant service) instead of saving.