1. They are incredibly difficult to get started. With so many features in one package, users often get lost. 2. Their version of sheet, trello etc. is often not as good. Additionally, they usually feel slow and clunky. 3. None of them address the problem of document management. If you rely on pro desktop software (Photoshop, Sketch etc.), you end up still having to jungle between stuff that's online and stuff that's offline.
In short, they offer an incomplete experience. We found a new way to crack this problem by integrating different services rather than building our own version of everything.
And the coolest thing is, you can use pro desktop apps along with your favorite web apps and organise them all in one place!
Put simply, it's like Dropbox + Google doc and much better. Check out the link to find out more. It's now on closed beta.