On the website side of things, if you don't like the rules of your hosting provider, you can choose from hundreds of alternatives. Hence, there is much less need for regulation.
For home wireless access, there are usually more choices than for home wired access, with at least 4 choices available in most decently populated areas. With 4+ choices, plus open platforms that make it easier to switch carriers, we may not need heavy regulation--the market might be adequate.
For home wired, an open system like Linux makes no difference for two reasons:
1. As I noticed, not many use it, so even if Linux somehow made it easier to switch wired providers, it would not have much effect, and
2. Linux doesn't make it easier to switch wired providers. If you are on, say, Comcast, and decide to switch to DSL, you aren't going to have an easier time on Linux compared to those on Windows or Mac.
As to your second point, it is equally difficult to switch wireless providers (e.g. Comcast) as it is to switch wired providers (e.g. Verizon). Some would argue it's harder to switch wired providers since they are essentially government-endorsed monopolies, but then again many people cannot switch wireless providers due to 2-year contracts, work-provided plans, etc.