Since ISPCON last November when Google and IKANO were on the panel about the Channel, Google has been using every avenue to sell Google Apps - the agent Channel, the VAR channel (both with Google Apps Reseller Partner), and service providers (like Nuvox).
Google has added widgets to allow users to migrate from many mail platforms, including Yahoo, Hotmail, AOL, and a few dozen others. Google also has a widget that lets you take everything with you when you LEAVE Gmail. That's right. If your user (or the service provider) wants to leave Gmail, there's a widget to download everything. Kind of takes away the whole trapped feeling. Not to mention that you can use POP3 or IMAP with Gmail instead of webmail.
Many providers are moving over, including Valeo, Nuvox, and DSLExtreme. Why? It reduces expenses / cuts costs. The expense of running email and spam servers, archiving, and especially the applications platform are taken away for about $5 per email box per year! The ROI Analysis can be found here.
Can you as an ISP profit from Google Apps and the Amazon Elastic Compute Cloud (EC2)? Absolutely. Migration, tech support, etc. can be tied into a Managed Service Agreement as you manage the network, data, access and cloud for your clients. (The VAR Guy has 3 examples. And I have at least one here). Embarq has even launched a Managed VoIP service -- so businesses will pay for convenience, hand holding, time, and peace of mind.
IKANO has just signed me up as a Referral Agent. I will get paid to send IKANO ISP's with at least 5000 users who migrate to the Gmail and Google Apps for Partners platform. Call me for details at 813-963-5884. It will save you time and money (both power and spam filtering). Google Apps Partner Edition and IKANO on Apps.