Making it 100X harder to get them to pay for it subsequently. "If you’re good at something, never do it for free" - Joseph Joker MBA JD.
If not, then you are in the ad business.
If not, then you are in the ad business.
I suspect there's a special dynamic for developers. I'm usually more willing to try out new things on personal projects, but I also don't like paying for things on personal projects. At work I don't care how much things cost, but I'll definitely advocate for tools that worked well on personal projects.
Ideally you want your tools to be so easy to use, clients just switch onto a paid plan when they want to get serious.