Yes you're right amico mio there are niches, but for personal reasons i do not like to sell a thing copied.
I think the idea of " open-source " must be solidary and not commercial.
Today if you do not call microsoft, google or samsung , it's impossible to keep your innovations , because you do not have money to protect.
The only solution is to innovate constantly , have a distance in front of others.
History will remember inventors but no copiers.