How do you know they’re not considering it at all?
Reddit just pulled the rug out from under them, give them some time at least to come to terms with that and decide what’s best for them. They certainly weren’t hobbies, look at Christian’s (Apollo) posts on the debacle and you get a sense of the scale of what he built.
I’m hoping Christian makes a Lemmy compatible app (I’d subscribe in an instance like I have been for Apollo) like the developers of Tweetbot did for Mastodon but they have to do what is right for them in the first instance!
What makes you say Mastodon isn’t getting any traction? To me https://mastodon-analytics.com tells a different story.
I agree a well thought out centralised Reddit alternative could swoop in, but I’m in no hurry to look at anything other than Fediverse alternatives. I see no compelling reason to.