The problem is -- you can't attract users without at least some minimal set of features... I would be glad to recommend this to my friends, if it had enough of a feature set to be useful, but -- at this point, it doesn't. In the mean time, people are spending money and getting involved in other ecosystems, which makes it harder, over time, to switch back out of those ecosystems. This "slow improvement in features over a number of years" is actually little more than the slow road to being obsolete. It's sad, really, because it does seem like it's a decent, if not stellar, product, and it has potential.
It's not competing against products in the same class that are also developing over many years; it's competing against fully built out, fully featured products. While Adobe is making people upset with their rather expensive subscription -- there are many other options out there.