Is this still a problem? Don’t PG and others say not to be afraid of others stealing ideas, and that ideas are worth little, and that it’s all about the execution? Makes me wary of sharing my almost complete idea.
Ideas are cheap. Building a company is hard work. It takes a good idea and a passionate team to create something great. Sure you run a chance of someone taking your idea. But are they more dedicated and passionate about it than you? If so, you're in the wrong business. Better to find out sooner, tbh.
That is't exactly the point I was trying to make originally though. The point I was trying to make is that I doubt most small businesses are special snowflakes that can't be replicated. There are of course details that are specific to that company, but I doubt most of those are required for successful function of the company were someone to try to copy the model.
Nobody is going to put up with hyper-stealth NDA paranoias nowadays. But I do think the jury is still out on radical transparency. I don't think Snapchat would still be around without its secrecy.
It's bad enough that a few years ago here people were complaining that they would do a Show HN submission, and find a few weeks after that someone had taken their mostly completed idea, assigned a whole team of cheap developers to it and executed on it not only faster, but better. The question here is whether the business he's got running has aspects that can't be easily copied (and assessing this realistically might be hard), and if it can be copied, can it be done so without taking too long or taking more than the ~10 million plus the submitter thinks someone will offer?