The law around scraping is unfortunately complex, but it's plausible your use of it (legal compliance) could be legal regardless of ToS ("you're not allowed to use automated tools to check if we're breaking your license" is quite fishy):

https://legalclarity.org/is-web-scraping-legal-a-look-at-the...

https://en.wikipedia.org/wiki/HiQ_Labs_v._LinkedIn

Or you could base your business in Denmark: https://en.wikipedia.org/wiki/Web_scraping#European_Union