What I meant exactly… all this long, everyone is encouraged to contribute to the core, but many times they are discouraged by the process which result in frustration and they develop their own solution in the form of custom apps. So the term contribute should expand to include the ecosystem (in terms of coding), not only to the monolith core of ERPNext, i.e by providing custom apps.
From the beginning, I think, the marketplace is not encouraged in the development path of ERPNext. As I mentioned above, my term of marketplace is not necessarily monetary, but a place where custom apps are offered and demanded (maybe one can call it “blackmarket” 
)
But it can be monetary if a user start to ask for a complete custom app and will pay for it
this may not be intended or suggested by anyone. But as mentioned, it is unavoidable if more and more developers find their own solution and offer it as custom apps. Imagine if one also make his version of POS because there is a function can’t be fulfilled by built-in POS or POS Awesome.
How about another custom apps for Chat, Nextcloud, Shopify integration, and so on…
It is not me who against the concept 
I said strongly against (by some people) in the ERPNext development path.
This was mentioned in my post here ERPNext 14... What would you like to see? - #34 by rahy
There is monolith way and there is platform way.
No, I don’t complain. This is what I do as well. But since I’m not a programmer I can’t make good and complete custom app to offer to the community nor to support it in the long run.
My contribution is part of codes I answer to questions in the forum that I see solve a problem.