I just bought everything that I like. I personally didn't care if in the next 100 years or so the company is still alive or not.
I don't even know if my children or grandchildren or grand grand children will love collecting watch like me or not.
I am not trying to offense you with your personal rules, but it seems to be too strict and firm.
you only lived once, so why not try a brand that you personally loved down from your hearts.
I love MB&F, Richard Mille, DeWitt, Voutilainen, Vianney, Hublot, Serpaneva, and many more.
And one day I hope to collect all of them, because I don't have any rules in horological loved.
I love them because I love them.