Are more companies branding themselves with one syllable names?

Such as three and eir. Fella came up to me on the street one day looking for a three store. Well he didn't pronouce his 'th's and heard it as "tree store". Are they hoping that every time I think about trees that I'll associate such thoughts with their brand and that it will act as a form of subconscious advertising?

Didn't vodafone have an ad around the time of the change from eircom to eir, that mocked eir. It made the pun of a man not being able to function without air. By contrast vodafone sounds like a very old fashioned name. I admire them for not re-branding.