I thought the issue was that the BR forums back in the day didn't really have tutorials and a lot of content in Portuguese, thus they would come to English forums, ask for help, get it, then leave. Since then they have some bigger communities and have been contributing. How many people here actually go to the other forums and try to see that resources they have, what they're working on, etc? The crossover is minimal, mostly due to language barriers.
Well from my experience not only brazil memebers of the community are leechers but mostly server owners in general.
I was developing some tools last months (Map tracker for 11.8x, item editor for tibia 11 and some other tools).
I've asked for some help several guys on this forum and there was nobody willing to help. After I developed all those tools myself and they figured out, they started to ask me to share my work with them.
After that experience I've decided to not release full version of my tools and just a lite one which is a good starting point for everyone to develop their own tools.
Also there is a specific type of guys - the guys which think they can get everything for money and feel like a CEOs of big projects. They do not have any technical knowledge about OT at all. But some of them are lucky and run medium-size servers.