I think it depends on how your work looks like. They are both business and if they don't like your work, there are two ways: Improve whatever you have to improve or just give up and try something else
Unfortunately, I'm very persistent and spend lots of time persuing my dreams, which is making a living with art, and I know it's not for everyone and it takes time to build it, but I'm confident and trying to work hard, searching what are LW preferences, how to improve my art style, manage my time, etc.
And if it doesn't work out, it's ok too, I can try with Tapas and see if they would like to make my new serie into a premium comic. If they also don't want it, well I can improve it again.
I have a moto that is: while you're alive, you keep learning new things daily, even smal ones, and if you give up now, how can you do better next time?