Nothing at all.
Microstrategy has enough bitcoins to post as collateral for those loans. This is more than a transaction moving those bitcoins into a segregated wallet. The only consequence is those coins won’t be immediately available for sell. But this is, of course, something Microstrategy is not interested in.
Yeah.. It may be a little unclear, because there could have been some financial circumstances that were not outlined very specifically by Saylor and/or MSTR regarding the liquidation point of some of MSTR's loans... but it makes sense that MSTR would post more collateral.. because initially when the BTC prices were in the upper $30ks, Saylor was saying no problem because the collateral then posted had MSTR's loan protected all the way down to some price point in the $21ks, and few folks were then thinking that the BTC price would get down into the $21ks - so maybe now the idea was that Saylor/MSTR wanted to make sure that they post additional collateral in order that they are protected down to $13,500 - which seems understandable that they are going to want to continue to add to their collateral in order that their outstanding loans are covered.. while at the same time not necessarily wanting to encumber currently unencumbered BTC by placing it as collateral (which largely means giving keys to some other parties.. and we have recently seen that some other parties have not been very responsible in their holding of the keys of their clients, related to a variety of crypto assets - so not just BTC custodians - and even witnessing some otherwise responsible custodians get caught into situations where they might have lost or absconded with the coins of someone else).
Posting collateral seems a better option than either getting liquidated or having to sell BTC in order to pay off the loan with BTC prices way lower than the price in which the loan had been taken out.
I am sure that the situation is stressful for Saylor and MSTR - but likely not as stressful as some of the seeming exaggerations that come out with assertions of loose facts that are put out as if there is some kind of an inside scoop - and surely the BTC price dropping further than expected is no comfort to MSTR's actual BTC but also the fact that the value of their company (price of their stock) is going down at the same time - so options get removed from the table - while at the same time, I recall a couple of months ago that Saylor/MSTR had gotten approval and announced a line of credit that was in the ballpark of $200 million that it could use for business operations and/or buying bitcoin and/or any reason that it wanted to use such line of credit, and I cannot recall hearing that any of that money having had been used and it seems to me to be likely that the money would still be available.