You have a fundamental misunderstanding of sunk costs and are misapplying it to cryptocurrencies. @mflmiguel is absolutely correct that sunk costs are something you cannot recover under any circumstances. This is not the case with Tron. By your definition, nearly everyone should have sold their homes during the 2008 financial crisis because the value went down. Clearly there are many people who did not sell their homes, and they are now more valuable than before the crash. So how much money did those people lose? Nothing, because they didn't sell.