I find it unlikely that such copy protection would actually convert a non-paying user into a customer.
I also don't want to make the software network dependent in any way.
As a user of Monodraw in an airgapped environment: thank you!
I used to think that but then kept tripping across customers who ran multiple copies of my software after purchasing a single license. I now wish I'd tightened the DRM from the start.
Fighting piracy is generally not worth it. Those people would never pay, so you're fighting to stop a pirate from using it, not to get them to pay. There's a big difference.