Incoming margin call on Nepali real estate loans?

I'm in Firefly as I write this, and just saw a house with multiple restaurants on Sale. And I wondered, why would anybody in access of the golden-egg laying goose want to sell the bird? Unless they had leveraged the future earnings of the bird into buying a tonne of other assets, getting themselves neck- high with leverage. In real estate. If the market value of at least some of the assets they had borrowed against had lost some value, they might have gone below the margin requirements, and the lender could have demanded they put more assets. Due to lack of liquid assets( being how leveraged they are) liquidating Some of their assets at under-market price might be a good way to get out of the squeeze. But that increases the liquidity of the real estate market and makes prices( at a lower level) much more transparent. 

This could lead to a series of margin calls for other customers, cascading into decreasing asset prices until the entire market collapses.
 

I have wondered in the past how the Nepali seal estate market has sustained for this long despite such tricky economy& the answer appears to be the lack of much liquidity due to people being 'unwilling to sell at a loss preferring to pay interests at an unprofitable asset instead. In this post I have outlined a scenario on how the current status quo might be broken for a highly undesirable outcome.