I think at $2000 it is a little expensive to me, however the price may be about right. If you think of the competition, there is the 5D mkiii ($2500) and D750 ($2000). In my opinion the A99 lacks only in AF coverage and high ISO performance to these two cameras. If not for the D750, I would say that the A99 has no problem at this price, however the D750 appears to be a better camera, at least on paper.
I honestly do not think that price is really an issue. The A99 is a very capable camera and not so much worse than either Canon or Nikon that it is grossly over priced. If you take into consideration that at $2000 it comes with a battery grip from B&H, it is definitely priced right. I think the issue is that Sony is not known as a "pro" camera to many photographers. Most people who are getting into more serious bodies know of Canon and Nikon and would not even consider Sony. Also, the majority of people buying a camera now are doing it online which means their best source of "expert" advice is either a friend who has been a photographer for years (i.e. only using Canon or Nikon) or quick internet searches for "best camera" where you will get a lot of hits about Canon, some about Nikon and then maybe 5% from other brands.
I do not think anything that Sony releases in A-Mount will change their status unless they come across some alien technology to make a camera so much better than anything else out there, that people will be willing to change systems. If Sony makes an A99ii (I hope they do within the next year), it can only improve based on what is out there today. If this were to happen, all it would do is people would upgrade from A99 to A99ii or add an A99ii to their current A-Mount lineup or if someone was already considering an A99 they may join the Sony camp.
If you are looking for a camera now, the A99 is a great camera. Based on what I have read, the A77ii is also a great camera. If you do not think you need the dual SD slots and the GPS, then the A77ii may be a better choice. I would take it over an A99, 5D mkIII or D750 on a price standpoint. Basically A77ii + 18-35/1.8 + 85/1.4 is a complete system for my uses for only $2600 +/-. If I were only doing photos, I would consider the Nikon D7200 with similar setup for roughly the same cost. The FF equivalents would be $5000 +/- and have no advantage other than AF speed on the zoom lens and high ISO performance.