Wikipedia is not a company or an asset to be traded, but an online free, open sourced, community run protocol for organizing information.
Wikipedia, for all its faults, is still a decent repository for non-political things, and a great "free encyclopedia." It would not be great in any way, for any capitalist, even a so-called good one (which Musk is not) to buy / own it.
To the degree wikipedia is flawed, its because our community is flawed. The solution is to fix our community, not allow some billionaire to "own" information.