But remember, the Sound United management team sold the company for a hefty sum. There are stories of company A selling to company B for a huge sum and then many years later, buying back Company A from company B at a discount
Marantz and Denon have brand equity. If it was $1 to buy the company, someone like Topping or Schiit could easily buy it and rebadge their products. If the company has debt, that is a different story. But if the company has debt, they could try to split the company, bankrupt it, and let the people who are owed money lose out. Even then, if the company is $1M in debt, they would sell the company for $1, so that the people owed 1M at least get $1.
So there is zero chance that Marantz or Denon disappear. There is a chance that Marantz and Denon *as we know it* can disappear. Think about Oppo disc players. No one both those assets.
If the situation is dire enough, the only company that could save D&M would be Bose, honestly. Or a wealthy private equity guy or billionaire doing it as an hobby.