The creator mentioned that he picked the names because they were pronounceable, unique, memorable, and searchable. That misses out on meaningfulness and familiarity, but those are expensive - by dropping those requirements, you gain easy SEO, trademarks, domains, etc. A big company knowing they're going to sell millions of copies can spend 5 figures on a domain and 6 figures on SEO, but I don't think it's worth it for most startups.