if the secret sause is so simple that they can copy it in months without violating copyright laws, may be it's not so saucy after all!
Data, whether code, or algorithm, is not physical, and therefore, unless you don't give the code out (e.g., sell via SaaS), it's gone as soon as you release it, obfuscated or not.
Also - keep in mind that "Legal advice" isn't necessarily "Business advice". Lawyers can't tell you how to make money, or how to build a business that survives even when people compete with you. They'll tell you how to try to prevent competition, or protect IP, but they won't tell you how to be a market leader.
As for BigCorp copying your inventions - that can obviously happen. But it's also very likely that if you can solve a problem that BigCorp is failing at, they'll simply give you an M&A offer.
And it hurts that I careless about the code - it can be rewritten in a million ways. What I care about is what code does, and the multitude of GloboCorps working on the same issue in vane, and their ability to reproduce our work in months once they understand the secret sauce.