First and foremost it is looking like 21 has developed extremely inexpensive and efficient chips to embed in smart devices which will have a very nominal power usage and only mine a few satoshi's per hour for the sake of profiting off of IoT services and not primarily off the value of the mined bitcoins themselves.
1) Allowing for micropayments for services, sites and products where the user doesn't even need to signup for a service or provide a credit card.
2) More secure authentication which depends upon the security of the very secure blockchain instead of any built in software. This will be completely transparent to the user as they just need to use 1 satoshi and than they can have the ability to use trustless escrow or smart contracts on the blockchain.The intention here is to make bitcoin useful without the user even knowing about it or having to purchase any.
3) Free SAAS services which depend upon the bitcoins being mined.
4) The ability to pay for and resell bandwidth, where routers and cell phones may become part of a decentralized Small Cell network - https://www.youtube.com/watch?... This is likely why Qualcomm is invested.
5) Reducing the costs of devices by subsiding a bit of the upfront costs with SaaS, mining reward, and BTC tx fees all possible with adding a mining chip.
One good consequence will be in the reversal of the trend of the centralization of mining and the further strengthening of bitcoin. I expect other companies like google, MSFT, AMD, IBM, ect... to form partnerships and start to develop their own competing chips which may use bitcoin or another alt.