It's generally not a dealbreaker for most offices. With external battery packs you can get extra days, or you could just get a free standing mount that moves closer to a nearby outlet. Most commercial buildings require power every 8 feet or so on walls, so you're rarely in a power desert.

If you can mount near a switch for a light, you can usually get access to unswitched mains right there (1 hot, 1 neutral wire).