So, then, relative to a big seller (like, say, Koch), once the MMs buy the shares, they either add them to their "inventory" for a runup or sell them. But who would they sell them to to make a net profit?????
Say MM A has agreed to do a negotiated sale for Koch. Many billions of shares are involved. They decide on a price of 0.00037. MM A starts selling. He makes money because Koch is paying him a commission. MMs B, C, and D (and more; there're lots of MMs on CMKX) buy the stock at 0.00037 and resell it to each other at 0.00038 or 0.00039, or to retail buyers at 0.0004. They have plenty of time in which to do this, and eventually everyone makes some money.
Do you think they are covering shorts this way?
No. I don't think there's any short position, and if there were they could probably take the price lower to cover.
Urban retiring shares to the treasury...
Don't think so. It'd make no sense at all for Urbie to have dumped hundreds of billions of shares on the market at 0.0001 only to buy them back at a higher price.
the Lundins, DeBeers....
There's no evidence at all that either has been buying CMKX, or will ever buy it.