I think Google has a general philosophy of the web that promotes crawlable HTML over other formats. I noticed recently that traditional job aggregators like XML

I think Google has a general philosophy of the web that promotes crawlable HTML over other formats. I noticed recently that traditional job aggregators like XML job feeds, yet Google promotes JobSchema as an incompatible standard. So less that Chromium directs pagerank, and more that Google's genreral view of the web is HTML over XML. I hope JobSchema fails because it is harder to aggregate, unless you already index web pages at scale. Although I don't have firm evidence, haven't worked at Google, and you likely know company dynamics better than I.