Digital Ocean, Cloudflare, and others have adopted this strategy with great successThis is a confirmation bias, however. There are a lot of orgs trying the same strategy to absolutely no success, great content that doesn't have the social proof rotting away in obscurity.
Even among the ones who yield success, that tends to come and go. It's a very short path between "wow great content" and content that is cynically (and sometimes accurately) seen as a thin veneer over self-promotion.
There was a period when Netflix, for instance, had tech pieces on here constantly. The crowd lost interest. They're still pumping out the content, presumably at a significant manpower cost, to seemingly little readership.