There are standards in place (or at least in mature draft form), but I agree with your general sentiment.Those predicting that we will see an overnight transformation (I think Cisco predicted $14 Trillion in value creation of the next 10 years?) are probably not being realistic. Bridging Bluetooth-LE to the internet - see IETF draft spec for 6LoWPAN for BTLE (6LoWPAN = IPv6 for low power personal area networks). Wifi works in some use cases. If the device only connect once every 10 mins, then it does not consume a lot of power to cycle on the wifi, perform transfers, and then cycle off. When it comes to low power wireless, duty cycling is pretty much the key. Technologies like BTLE just have built in duty cycling and with Wifi or 802.15.4 you have to manage it via the software. Networking companies like Cisco are already moving in the direction of directly integrating 6LoWPAN 802.15.4 radios into industrial Wifi access points, so that is how I see this playing out on the consumer side as well. Its not like your 802.11 router has only a single radio anyhow, so if a router also shipped with an 802.15.4 radio + 6LoWPAN bridge, then having low power IP is feasible.
Authentication and Security are the two really big issues that will have to be tackled.