I feel like this relationship of: one company pays a competitor to promote an unrelated product that could very reasonably be used to engage in anti-competitive behavior should at the very least be heavily regulated by the SEC, or possibly just outright prohibited. Alphabet is the epitome of the mega-corporation who has the resources to compete viciously in almost any industry, but has the breadth for plausible deniability about who their competition is.
“What? Mozilla isn’t competition…browser? Oh you mean chrome? That little thing? Nah, we just do that on the side. We’re an ad company.”
Meanwhile: “What? Meta? You mean like Facebook? We don’t compete with them, hah, remember Google+? They compete with TikTok…Oh ads? I guess so, but that’s kind of a side thing. We do mobile os/web analytics/email/whatever.”