This company and product line launched nearly 20 years ago (2007) and doesn’t seem to have changed much since. That’s quite a long time for something like this. If the owners had wanted the business to continue (perhaps they didn’t), some diversification could have achieved that relatively easily.
Your assumption here is that they wanted it to continue making money, rather than (for example) reacting to the influx of new orders from HA’s announcement by shutting it down. Perhaps a working source of revenue is being voluntarily terminated rather than having starved to death?