It's not completely impossible
Just look at The Walking Dead, Saga, Raina Telgemeier books, Scott Pilgrim, etc but comics as an overall fandom struggles with non-cape and non-licensed because the people who are into the alternatives are so spread apart regarding tastes and interest
We tried a general for it but it didn't last because nobody was reading the same thing.
Really I think a core problem with stuff like Image books are the delays
With capeshit and licenseshit you can get a new issue each month but for everything else you can expected months long delays and the hiatus ends it's back to one issue per month
That is agonizing
It's also frustrating because the metric of success for a non-cape/non-licensed comic is much lower than the ones that are cap and licensed
15k - 20k a month is a death sentence for a Marvel or DC comic (which says a lot because those aren't even huge numbers to begin with) at least before COVID but those are considered great for anything else so you can have something with solid potential not being able to truly spread its wings because it's overshadowed by decades old characters.
It's also kind of frustrating that we live in a time where young adults and teenagers can be superfans for Marvel. DC, and licenseshit through piracy making their decades long material available with ease but that hardly extends to them branching off into other comics (not like piracy in comics necessarily actually influences sales positively).
I mean people are free to read what they want, I can't force you to read anything else but places like /co/ would be so much better if we had more people into comics as a medium period and the discussion for the industry would improve vastly when people realize problems with Marvel/DC aren't necessarily problems for comics as a whole.