To me this is even worse than choosing a bad registrar once by mistake. You keep choosing companies who can't stay in business and let your domain float around like it didn't matter. The second or third buy-out of your name registration should have been an alert to switch to a top tier company for stability. On the internet, your domain name is literally the crux of your services.
Thank you for sharing your story. It should serve as a warning to others who may need to audit their infrastructure.