What would be required to get a court to order Sable pay the legal fees Cloudflare incurred?
Quite a bit. https://en.wikipedia.org/wiki/American_rule_(attorney%27s_fe... Versus https://en.wikipedia.org/wiki/English_rule_(attorney%27s_fee... in much of the rest of the world.
[1]: https://en.wikipedia.org/wiki/Octane_Fitness,_LLC_v._ICON_He....
[2]: https://www.forbes.com/sites/danielfisher/2014/04/29/patent-...