Again, this is not about
-how advanced Heroku's technology is on an absolute level
-how challenging routing is for their scale
-what competitors offer in this space and for what prices
This is only about the delta between what Heroku sold their customers and what their customers received. They are collapsing the delta now, by being honest about what they are selling (and improving their offering, it seems), but they are doing nothing to address the long time for which the delta was significant for a subset of their customers.