Selling it to anyone will be difficult. Way too much legacy, and lost context. It would be a quagmire of inertia to shift anything. As with most tech "giants"/"unicorns" that are past their zenith.

Most likely any buyers would kill off/sunset most of it, and gain a lot of negativity. Not going to happen.

More likely is the rumours of it being rolled/rebranded/de-labelled into a Salesforce offering, and quietly sunset large chunks of it (which would be less noticeable than if any new buyers did so).

Or Azure / GitHub.

Cloudflare and Vercel are companies that they are pushing innovation like Heroku did in the early days.