[thejosh]

Plex[0] is a pretty big media server / player..... Very big coincidence.

[0]https://plex.tv/

[dewey]

A lot of cinemas / cinema chains are called -plex too. I don't disagree that it's a bit uncreative to pick a name like that but it's not uncommon in that area to have a -plex name.

[psychometry]

Well, this product is called IsoPlex. They're different words, one of which is just a common suffix:

http://en.wiktionary.org/wiki/-plex