I'd say there isn't and there can't be simply because of the economics of it.
When you're using Twitter/Facebook/Instagram/YouTube/TikTok/etc., you're opening it many times a day and seeing dozens and maybe hundreds of ads. When you use Yelp, you're going to the site with a specific intent and trying to leave very quickly. You visit Yelp once a week or once a month and you try and use it as little as possible.
No one is doom-scrolling a review site and seeing ad after ad after ad. They're going to the review site, finding something, and leaving fast. So they simply don't get the kind of traffic that you can monetize into a giant business. But they have something that is valuable to businesses: their reputation. So you try to monetize that, but that's difficult. You don't want to let businesses pay to remove negative reviews so what are you selling them? Also, what lies might your salespeople be telling businesses that you're selling them? Are commission-driven salespeople telling businesses that paying will get bad reviews removed?
Angie's List worked off a different model where people paid to get access. That meant that they didn't have to look to businesses for payments and the reviews came from someone "real" enough to have a credit/debit card and have paid them money. However, it looks like they've pivoted their business model and it's no longer a paid service (and now called Angi).
Yeah, the financial incentives don't line up correctly.
You'd need something like a paid service that's backed by a guarantee (some credit cards basically offer this for the high-end cards; concierge service that will recommend a restaurant (that takes the card, of course) and if you complain to them afterwards they'll make it right or refund the cost).
But for most things people don't even bother - everyone knows gyms are scammy with cancellations and people still sign up, for example.
