> And "require longer support" doesn't fix it because many of the vendors will go out of business.

Which is not a real issue in practice. It's like arguing that warranty doesn't matter because the vendor might go out of business.

It might also be illegal. Don't know about the US but forcing a bankruptcy to avoid regulations is usually frowned upon by the court system here. So putting a product in a child-dummycorp to go poof when you want and let the parent stay afloat usually puts the parent in the line of fire directly and you are screwed either way.