CarpeDeo, flat panel loudspeakers are in fact very directional compared to conventional cone/dome loudspeakers, and the effect is more pronounced the wider the diaphragm. Depending on how you look at it, it can be a blessing or a curse. For example, flat panel transducers exhibit fewer interactions with the room's acoustics, something which plays a huge factor in the overall sound quality of a loudspeaker system. Also since the output is directional, it is less obtrusive to others in the room, perhaps desirable for a computer in a family room (although the limited width of desktop loudspeakers pretty much obviate the point). For the same reason, they are not well suited for multiple listeners distributed off the main loudspeaker axis.
Beware that some (many?) inexpensive computer speakers advertised as flat panels are not true flat panel designs, rather a shallow cone driver.
And yes, I would love to have some electrostatics tucked away on my desk, but running multi-kilovolt signal and bias lines around my computer isn't very practical. Not to mention the potential signal integrity issues that can arise.
Best regards,
Floyd