A $30 memory card is the entire cost of an Echo device -- that's a 100% increase in cost just to cache Wikipedia locally. That's a non-trivial modification, ev

A $30 memory card is the entire cost of an Echo device -- that's a 100% increase in cost just to cache Wikipedia locally. That's a non-trivial modification, even before talking about the processor upgrades required to actually utilize that information and do local processing. Your suggestion would drive the cost of an Echo from $30 to $300.