Your domain is the keywords your customers would search for. I am surprised more companies don't follow this ingenious for SEO marketing.
I can see why they did this since there were only a few TLD's back then compared to now and thus owning the .com for a specific keyword was a legitimate signal. I can't remember exactly when this got deprecated as a ranking factor but it was very useful for the first few years!
Over the years I've accumulated the domains of failed competitors that had more punchy names and toyed with the idea of rebranding but don't think it's worth it. The SEO risk of a rebrand is substantial concern.