Google's core business is advertising. Google likes to do stuff with the data that passes through its systems. Google has explicitly and pro-actively taken sides in fight against copyright violations instead of remaining a neutral party.

And they've been less than steadfast on Net Neutrality, which is a big red flag for a company that wants to be an ISP.

This is not about Google being "evil", but I do not want a company with that mindset and those interests to be my ISP. It's going to be very tough, if not impossible to separate those.

I know this is already common practice in the US, with many of the major (cable) ISP's being part of companies that having a direct stake in copyright exploitation, advertising etcetera.

So ask yourself: how's that working out for you so far? Would Google really be any better?