Don't underestimate the power of small contributions. You could say the same about people using konqueror 20 years ago, it brought KHTML which brought us webkit. You could say the same about people using firefox at the same time. You could say the same about people using linux in middle 90's, the same about GCC... I could go on showing more examples.
Simply using a software is a form of contribution: at the least it improves statistics. People making small contributions are important; small donations to wikipedia, bug reports, translations, fixing a small bug, improving a feature you need, talking with devs to guarantee a device works... I personally made many of these small contributions and although most of them didn't ended up on the "market leader project", it certainly made them good enough for people to keep using them and to encourage other people to contribute too.