Interesting. What Windisch says makes a lot of sense. Though, as much as I have come around to the merits of the new block editor, I see kinks in the armour that contradicts what he says regarding page builders and where the new editor is a threat.

The idea that page builders will jump into the space to extend blocks rather than become irrelevant is thwarted by the fact that there is no standard blocks for layout that allows third parties to hook in their own interfaces and additional functionality, solutions that can be, at a later date disabled to be replaced by others without losing the general layout.

I realise that there is an ongoing pull request on GitHub regarding a new section block, and have suggested the above and, while it has been acknowledged as a good idea there, there is no momentum behind the idea as something that is essential for core.

I can under why, say for example the makers of Divi are doing the minimal amount of updates to make the theme compatible with Gutenberg because of this (they even have a kill switch to disable GB and revert to classic, without the need to install Classic Editor plugin).

Of course if core implements something like my standardised layout component suggestion, which can be extended by third parties, then all bets are off and Divi and other builders will need to scramble themselves to port seamlessly with the block editor.

Until that happens the Gutenberg block builder loses some of it sheen.