The problem is Reddit has very little real value, and to get that value you'd have to go even further into pushing its users away from the platform as you'd need to be able to target and identify individuals.
Unlike Twitter, Instagram, Facebook etc the majority of Reddit is very intentionally anonymous, not even requiring an email address. A sizable portion still use 'old reddit' because of how awful and hostile the redesign was.
To get it to a point of profitability it would need to be more viable for advertisers, and that only comes with forcing them down users throats, which traditionally is not a reddit thing and would alienate people even more than they've already done recently.
It's also worth noting its 18 years old and still hasn't come remotely close to being profitable.