If anything, we can expect more people making Wayland compositors as hobby projects, if Waylands claims about a simpler codebase are to be believed.
They are not. Wayland compositors have to do a lot more of the same thing in every compositor than window managers ever had to. So many in fact that their whole central design idea has to be corrected for by everyone using wlroots to implement those common parts to get anywhere anyway which means wayland compositors in other languages without wlroots bindings are less likely.