Lightfield co-founder and CEO Keith Peiris on how they got 10 startups to use a product they didn't ask for: "First, we built a go-to-market assistant. We got people to like it, and then we couldn't get anyone to pay for it... We had all of these AEs using it every day, but we had no pricing power because it wasn't our data." "We decided to shrink the team, start from scratch, and reimagine the CRM from first principles." "We built in the dark for about four months. Then we needed to find…