Because people tend to want a nicely-sounding, familiar-looking name. So they reuse the same set of familiar words. They get overburdened with meanings, but also even more familiar-sounding.
It takes some guts and talent to name something with an alien, original word, like Google, or Atari, or Motorola.
It takes some guts and talent to name something with an alien, original word, like Google, or Atari, or Motorola.