This is correct, my friends from Scraping Fish are hosting https://compareproxy.com to help people find proxy for web scraping. I'm happy to "push" for Scraping Fish as I'm also a satisfied user who received a lot of help from the founders for my web scraping projects.
For web scraping at scale you want to get lost in the crowd. This usually means being (or pretending to be) chromium on windows. Unusual browsers are suspicious, detected or have very distinct fingerprint.
There are also SaaS products with usage based pricing. It depends on what SaaS or software or product it is. Different pricing model works for different things.
I'm using Scraping Fish because of their pay-as-you-go style pricing as opposed to subscription with monthly scraping volume commitment. And they don't charge extra credits for JS rendering or residential proxies because the cost of each request is the same: https://scrapingfish.com