Parent’s capital may be wiped off and as majority shareholder Govt may step in to infuse capital. That is you and me paying indirectly for the mistake because so far we have voted for a socialist regime which is root cause of this problem of bank nationalisation.
But there will be pressure to get the money and like Canara bank the decision makers can decide to sell off the stake. Let PNB come out with how they are going to handle the hole in the balance sheet. Being a govt. run bank the depositors would not be concerned much and majority of them may not be aware of its implications.
As for the PNB HSG borrowers it should not matter because the lender should be more concerned than the borrower. As for public depositers with PNB Hsg, if they thought it is majority govt owned, the perception would remain. For those who are aware of the difference, they may deside to withdraw if their concern bothers them. The company may face short term redemption pressure and that should be part of their business plan. But their future borrowings may be priced higher because of investor conversation.