Maybe, I do think it really depends on the type of software/situation.
In an argument about how much someone is able to use something, I think you could argue that a copyleft license turns more people away than it would force to participate, so the overall amount of work that is freely available is less than it would have been with a permissive license. (That is, if 10% using a permissive license don't contribute back and 90% do, you end up with more contributions than if 100% of users contribute back to copyleft but you only have 50% as many users.)
I do think it's very situational though - clearly Linux being GPL has been a huge boon in forcing contributions, and I think the killer bit here is that forcing those contributions means that people are able to use their hardware that might otherwise only run proprietary operating systems. That is, it's the forcing open of something that hardware companies would otherwise keep closed.
On the other hand, I don't see any huge reason why a good regex library, for instance, shouldn't be permissive - making a regex library copyleft isn't going to force open some proprietary software, they'll just use some other (maybe worse, maybe equivalent) regex library, and you might get fewer overall contributions and end up with a worse overall available library.
In an argument about how much someone is able to use something, I think you could argue that a copyleft license turns more people away than it would force to participate, so the overall amount of work that is freely available is less than it would have been with a permissive license. (That is, if 10% using a permissive license don't contribute back and 90% do, you end up with more contributions than if 100% of users contribute back to copyleft but you only have 50% as many users.)
I do think it's very situational though - clearly Linux being GPL has been a huge boon in forcing contributions, and I think the killer bit here is that forcing those contributions means that people are able to use their hardware that might otherwise only run proprietary operating systems. That is, it's the forcing open of something that hardware companies would otherwise keep closed.
On the other hand, I don't see any huge reason why a good regex library, for instance, shouldn't be permissive - making a regex library copyleft isn't going to force open some proprietary software, they'll just use some other (maybe worse, maybe equivalent) regex library, and you might get fewer overall contributions and end up with a worse overall available library.