Ellison had a pretty open-and-shut case against Cameron, which is why he won easily. Ellison is not the sort of person who "sues at the drop of a hat," which is why he usually wins.
Yep. I've never tried to find proof because I wasn't really interested, but it's been alleged to me that Sliders co-creator Tracy Torme' testified for the case that he and Cameron were in a bar one night, and a drunken Cameron openly bragged about how he ripped off The Outer Limits and Ellison. Allegedly this testimony included Cameron spouting off, "Easiest money I've ever made!" among other things.