Personally I believe that this well overestimating the rate internet connection-speeds and hard-disk space will grow. Just look at ADSL or even cable for instance.
I don't think storage will ever be much of an issue. Bandwidth sure as shit is and they seem to be a little casual about that with the ever increasing block size proposal.
Nothing you can do about it yourself. You have to wait for your friendly phone company to come around and do some digging up and install major hardware upgrades.
My bandwidth is unchanged in over a decade and there's nothing on the horizon either. It suits my purposes fine but it's not going to like running a node in such a future.
Actually I don't think bandwith is that much of an issue. It will take a bit longer to sync but that's that, the worst part will be downloading the blockchain the first time, then if you open it daily is not that bad.