Like we run 10+fps and keep ALL images... Burst rates exist so you can keep 1 or 2 of the best of the sequence, and then you throw the remainder out.
If you don't shoot bursts now, you won't be required to later, and thus won't have to worry about all the extra storage and backup capabilities later. 
What is really going to happen in the future is that bursts will really just be video feeds, and then you just pull the frame out you want to keep. As we approach 8K video at 30-60fps, bursts won't be performed as they are today, cameras will just go to video in fast burst rate mode, and give you the ability to look frame by frame through the sequence.