I am just waiting a couple more decades (or maybe just a few years) until more Chinese vendors will pop up and sell a 200 MHz scope which is plain 200 MHz but at a 70 MHz price point. Because clearly Rigol can make one at a 70 MHz price point, they just don't want to sell it at that because they wouldn't profit as much. I'm pretty sure they make a decent margin on the 70 MHz version. The most expensive things on that scope are probably the Spartan-6 devices at about $35 each, the CPU is probably $10 and the ADC is probably the same... the rest is R&D, other components, assembly, test, support, accessories, and margin...
To be honest, the argument of recovering dev costs back doesn't mean much here. Sure there are slightly more costs in designing a higher bandwidth scope but nowadays it's things like selecting a higher bandwidth buffer amp/VGA, changing a few passives and making the layout cleaner. Maybe with older analog scopes 200 MHz was very difficult to get but nowadays it is done with so few components it's pretty impressively simple.
Agilent and LeCroy better up their game by improving their lower end offerings... it's no longer funny to just slap your name on a Rigol or Atten and double the price. Tek seems to be struggling in the higher end department too. Got to play around with one of their newer scopes at work (I forget the model but I think it is related to the DPO3034.) Compared to the 3000X we also had on evaluation it was slooowwww (menus took ages to pull up, options hidden behind 20 sub menus etc.) the 3000X was nice and responsive, intuitive to use, and a bit cheaper too.