I've been chewing on this a lot too, and honestly, what finally shifted for me isn't the structured data or the "quality answers" bit - that's still the same playbook. The real difference is that AI platforms have very different citation tastes than Google does, and that's forced me to care about places i used to ignore.
Two years ago I was optimising for Google's signals: backlinks, domain authority, keyword density inside the page. now if I want to show up in Perplexity, I need content on Reddit - because something like two-thirds of their citations come from there. If I want ChatGPT to pull my stuff for a shopping or how-to response, I need structured data and a presence on Wikipedia or G2, because that's where they lean. The platforms aren't interchangeable - Google's algorithm is one beast, but ChatGPT, Perplexity, and Gemini each have their own source preferences that behave completely differently.
the thing I'm doing now that i wasn't two years ago is actively managing where my content lives across those platforms - not just publishing on my own site and hoping Google picks it up. I'm putting effort into Reddit for Perplexity visibility, making sure my brand has a clean Wikipedia or G2 presence for ChatGPT, and writing content with extraction-friendly structure because AI reads tables differently than paragraphs. That feels like a genuine gap, not just a label swap.