Ask HN: What chance is there of a TLD raising prices significantly?

I am looking to purchase some .yoga tld domains, and I am nervous about building a business on a domain tld that has dynamic pricing.

Most every .yoga domain on namesilo costs $23.99 USD/year... but some of them like natural.yoga cost $5,000+/year

Is there anything in the ICANN contract preventing whoever owns the .yoga tld from saying "hey I think I want to increase flyGuyOnTheSly.yoga from $23.99/year to $10,000/year renewal fee because that is a popular domain"???

Essentially rent seeking on my hard work that made a "worthless domain" in their eyes "now popular"?

Thank you