You're also going to have to take into account whether it's compelling for you, considering the non-zero risk of devoting a lot of time to businesses with limited product-market fit. That's obviously less risky if you're sticking with markets you know well, or if you end up with a massive portfolio of products so you can switch to pitching something else as soon as you see the customer's eyes roll...

There's an adverse selection problem where the businesses that aren't market ready are the ones most likely to be intrigued by the idea of someone who isn't an employee and doesn't cost anything doing their sales for them.