If you think that you can set up your own node in a p2p social networking site that keeps your data on your own box and gives you control over who accesses it, and that since it uses negligible bandwidth it would be fine, I think you're wrong. The point of banning servers is to prevent competition with other services. They want you on a business connection because they believe if you are offering data to anyone that you should be monetizing it, and if you are monetizing it, they want to be guaranteed that they can take a percentage of your revenue.
We're facing a very near future where MOST employees could out-compete their employers by going independent and selling their skills online. The ban on servers guarantees this can never happen to any degree that threatens the status quo. If it did grow to that scale, ISPs would just force such people to get business connections, meter their traffic and estimate the persons revenue, and raise their prices so that an independent worker would have the same overhead as a company that has to maintain a physical building, executives, etc, etc.
We're facing a very near future where MOST employees could out-compete their employers by going independent and selling their skills online. The ban on servers guarantees this can never happen to any degree that threatens the status quo. If it did grow to that scale, ISPs would just force such people to get business connections, meter their traffic and estimate the persons revenue, and raise their prices so that an independent worker would have the same overhead as a company that has to maintain a physical building, executives, etc, etc.