JS is the language of browsers. Python runs on server. Django is the best server framework to run Python applications. Whatever was built with Java and c, can be built with Python today. There’s no code protection and both can be reverse engineered very easily. Nobody can claim any IP rights on applications built with open source technology. If you release an evaluation copy of your njscada, it will be reverse engineered immediately. You can’t sell even a single copy of njscada. Even MIcrosoft can’t make a single penny with windows any more.
Coding has become like lego building blocks. Very powerful development tools are available for free. You can build awesome applications by putting the right blocks together and upload it on Github for free. Coders are killing coders. I think, we have to accept the reality. Many software companies will be wiped off in a couple of years.