And unfortunately, we've become an extremely litigious society. Sometimes, it seems like every other commercial on what little television I still watch is an ad for a tort law firm.
Some months ago, I was involved in a minor traffic collision. The other driver as much as admitted to my face that I kept looking in her direction, and speeding up, and couldn't get it through her head that I was every bit as interested in getting off the freeway as she was in getting on, and was trying to open up space for her to slip in behind me. She picked the worst possible time and place to try and squeeze in ahead of me, making a mess of my starboard headlight and starboard front fender (I could see no damage to her port rear quarter, but didn't want to risk getting run over to get a better look). The CHP and the insurance companies investigated, and found her 100% at-fault.
I declined to pursue any action, dropped my insurance claim, and had my fender and headlight fixed at my own expense, a few weeks later, while I was on vacation by rail (and could therefore do without the car for two weeks). Because she'd been through enough as it was, and I'm not the slightest bit interested in taking retribution for somebody's stupid mistake.
But when I hired a freelance editor to go through my work-in-progress novel last year, you better believe that there was a NDA involved, and I had the signing witnessed. By an ordained cleric, but that's only because said cleric had been involved in getting the two of us together, and was the most trustworthy person available at the only place where the editor and I have ever met face-to-face.
Back in the 1960s, TOS accepted spec premises, outlines, and scripts (at least according to David Gerrold's book on how "The Trouble With Tribbles" came to be produced), but they had to be submitted through a WGA-recognized agent, and apparently (at least as I read his description of the process) Gerrold was required to join the WGA as soon as it sold, and was thereafter prohibited by the WGA from working on-spec. My understanding is that (1)all the TNG process did was open up a route that didn't require an agent, and (2) there was a certain level of altruism involved, as well as the practicality of scraping together enough material to use.