Once you have a model in finance that works, you hide it. You hide the techniques you used to build it. You hide the methods you used to improve your data. And most importantly, you hide the data. The financial incentive for secrecy is strong.
It’s just that in Silicon Valley, you can’t merely make a better typewriter and sell that at a profit. No, you have to DISRUPT. You have to REINVENT. Well, at least you need the appearance of that, while you squeeze eyeballs until they pop out enough advertising dollars to give the VCs that 10x return.