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

What, we have 90 years where RCA connections have worked just fine and now you demand XLR connections? 

Increased complexity, more real estate required on the back panel and reduced profits.  I would always want to pay extra and have them rather than cheap out and wish I had them.  Especially since I live in a noisy situation and need long lengths of cable. 

@dreas 

Are you referring to balanced signal paths between preamps/amplifiers? Digital components or just the use of that style of connector? There is a difference when it comes to the signal path (balanced/unbalanced) and there are other situations where unbalanced coaxial would be better as well. 
If I were to offer the most simplified response it would be the difference between professional and consumer products- but that has also changed over the years.

My guess would be that equipment that is manufactured as truly balanced, would always have XLR connections.   And all other equipment having balanced connectors are only fooling the buyer into thinking there will be an improvement in sound by using them?  By using XLR cables into an unbalanced amp, does the signal not have to be processed one extra step?  

@carlsbad : +++++