Software wasn't always covered by copyright, and people wrote it all the same. In fact they even sold it, just built-to-order as opposed to any kind of retail mass market. (Technically, there was no mass market for computers back then so that goes without saying.)
That argument seems to have been proven basically correct, given that a ton of open source development happens only because companies with deep pockets pay for the developers' time. Which makes perfect sense - no matter how altruistic a person is, they have to pay rent and buy food just like everyone else, and a lot of people aren't going to have time/energy to develop software for free after they get home from their 9-5.
Without IP protections that allow copyleft to exist arguably there would be no FOSS. When anything you publish can be leveraged and expropriated by Microsoft et al. without them being obligated to contribute back or even credit you, you are just an unpaid ghost engineer for big tech.
This is still the argument for software copyright. And I think it's still a pretty persuasive argument, despite the success of FLOSS. To this day, there is very little successful consumer software. Outside of browsers, Ubuntu, Libre Office, and GIMP are more or less it, at least outside certain niches. And even they are a pretty tiny compared to Windows/MacOS/iOS/Android, Office/Google Docs, or Photoshop.
The browsers are an interesting case. Neither Chrome nor Edge are really open source, despite Chromium being so, and they are both funded by advertising and marketing money from huge corporations. Safari is of course closed source. And Firefox is an increasingly tiny runner-up. So I don't know if I'd really count Chromium as a FLOSS success story.
Overall, I don't think FLOSS has had the kind of effect that many activists were going for. What has generally happened is that companies building software have realized that there is a lot of value to be found in treating FLOSS software as a kind of barter agreement between companies, where maybe Microsoft helps improve Linux for the benefit of all, but in turn it gets to use, say, Google's efforts on Chromium, and so on. The fact that other companies then get to mooch off of these big collaborations doesn't really matter compared to getting rid of the hassle of actually setting up explicit agreements with so many others.
That's great, but it's not what FLOSS activists hoped and fight for.
It's still almost impossible to have a digital life that doesn't involve significant use of proprietary software, and the vast majority of users do their computing almost exclusively through proprietary software. The fact that this proprietary software is a bit of glue on top of a bunch of FLOSS libraries possibly running on a FLOSS kernel that uses FLOSS libraries to talk to a FLOSS router doesn't really buy much actual freedom for the end users. They're still locked in to the proprietary software vendors just as much as they were in the 90s (perhaps paying with their private data instead of actual money).
If you ignore the proprietary routers, the proprietary search engines, the proprietary browsers that people use out-of-the-box (Edge, Safari and even Chrome), and the fact that Linux is a clone of a proprietary OS.
>> That sounds like the 90s argument against FLOSS
> This is still the argument for software copyright.
And open source licensing is based on and relies on copyright. Patents and copyright are different kinds of intellectual property protection and incentivize different things. Copyright in some sense encourages participation and collaboration because you retain ownership of your code. The way patents are used discourages participation and collaboration.
On my new phone I made sure to install F-Droid first thing, and it's surprising how many basic functions are covered by free software if you just bother to look.
