At this level of high(er) end audio why not offer balanced connections?

I am curious - and please, save us all time, refrain from speculation on this - why do companies persist in omitting balanced connections when it comes to high / higher end audio products? 

I understand that when it comes to lower price point items manufacturers would not want the additional costs. But when many folks have higher end systems, why would an manufacturer not offer balanced connections? 

Appreciate those with non-speculation replies.