If we're doing to defer to industry, does only the opinion of website operators matter, or do browsers and CAs matter too? Browsers and CAs tend to be pretty important and staff big security teams too.
So do we wait for all the stragglers? Wait for the top 500 or top 2500 to make it mandatory? Who takes financial responsibility for those that fell through the cracks?
DNSSEC zone signing lets one resolve records without having to directly go through trusted (ie centralizing) nameservers. (If you run your own recursive resolver this just changes the set of trusted servers to the zones' servers).
I've made this argument in the context of your poo-pooing DNSSEC before, and I don't expect you to be receptive to it this time. Rather I just really wish I could get around to writing code to demonstrate what I mean.