His first startup was a cool idea: Uber for Valet Parking. Investors loved it. But the unit economics didn't work out. So he had to pivot. He ended up selling it, but decided to do things differently the second time around.“It’s the boring stuff that makes money. Sometimes the sexy, interesting things are really great ideas, fun to use, but aren’t money makers. They aren’t durable businesses.”With Argyle, he didn't start with a cool idea. He replaced a product customers already paid for. His ...