Want to use the Blu ray drive? That will be an extra $20 a month. DVD drive? $10 extra a month. Want to play more than 2 games a month? That will be an extra $10.99 per game played. Internet access, downloading games, and playing games online? $2.50 per GB (on top of the price for the games) and $0.02 cents per MB when playing online games. Want a package deal that includes a lot of different options and a pre-set MB limit (that you get charged 10x for if you go over) for online game usage? $100 a month for the bronze package. $150 a month for the Gold package. And $200 a month for the Platinum package. And to top it all off they will charge you $0.05 cents for every KWh you use the system, they will market this as a way "to help conserve energy".
An internet connection would be required to authenticate the console each time you turn it on in order to relay the usage stats to Sony for billing purposes. Any means to circumvent or tamper with this process will immediately terminate the console and require you to return it to an authorized PlayStation processing center. Failure to do so within 15 days and you would be charged a $450 service fee. You will have the option to reactivate your console after 5 days from the original termination date for a minimal fee of $50, each re-occurrence would add an additional 20% surcharge onto the previous fee.
The console will essentially turn into something like what the mobile phone companies are doing, except much much worse!
You know this probably isn't very far off, and I can easily see this happening in the near future. I can see the marketing hype now "Get a PS4 today for only $12.99! And brand new games only cost $20!" Then once you get it you realize that you are essentially renting the console from Sony, and that they are going to charge you various monthly fees and service fees based on how you use the console.