Thanks for the kind words.

From my view, the hole in the market is not customer support and features requests. Fabric.js and konva (that is used inside Polotno) are "low-level" libraries. They are providing a DOM-like API to the canvas. That is it. In order to make a full canvas editor, you have to write a lot of code on top of fabric, or konva, or any other library, or SVG.

https://polotno.dev/ - is designed to solve a very narrow business need. So you can build a full editor with much less code (almost no code at all). It may be less flexible, but it is the tradeoff for solving one problem in a good way.