With as many gamers who own both a PS360 paying $38-$60 a year on XBL to use features such as Netflix that they already pay for or play games they've purchased online when the PS3 and PC can do it for free, there are many gamers who will question why they should continue to pay this fee when the PS4 is more powerful than the Xbox One, and online for the PS3 works just as well on all the same games as it does on the 360.
The 360 having its own dedicated servers through XBL does not mean that the game will run better online. It's all about the netcode. That's why those of you who have played the same games for both consoles online, both wired, will know there's no difference. There is a difference using the fat PS3 wireless and the 360 wireless adapter. The fat PS3 has probably the worst wireless component in the world. Wireless in the new PS3s is a lot better.
Regardless that they're trying to market this to casuals by introducing television features. One thing people seem to forget is you need an additional set top box hooked into the Xbox One. You also know that these additional features will cost a fee on top of the $60 a year. Microsoft knows that people who don't play games will get the system and they're not just going to give away a cheap DVR. Like any other DVR, people are going to have to pay for the recording service, whether it's from the cable company or from Tivo. The only people who can use a DVR without paying anything is those people who watch television on their computer, as there are many programs with all the functions that a DVR has if you decide to watch tv through your PC.
So while Microsoft is going for this new market, they're not going to really capture it as easily as most people want to believe. Why spend $500 on a Xbox One then another $100-$200 on a receiver when you can get a Tivo and a lifetime subscription for $600. No monthly or yearly fees afterwards, and while your the Tivo can break down, if it's out of warranty, you'll want to pay to get the Tivo repaired because lifetime subscriptions can't be transferred between Tivos.
Most cable television packages include the cable box within the package. So if you don't get the cable box, your package is usually increased. Why remove the cable box just to get Xbox One which does the exact same thing, with a few exclusive things you can do on a smart tv or PC?
So between casuals that Microsoft is shooting for and their own fanbase with what's now a weaker system on the same 64 bit engine, with $60 a year online fee, and being loaded with DRM, I think they're going to lose many more gamers than they've gained. The fans that purchase multiconsole titles on the 360 and PS3 exclusive only will switch hardware for multiconsole games when the PS4 gets the better version every time and having more exclusives, some may not even purchase the Xbox One at all.
While this is all my opinion on why I think other people wouldn't purchase the Xbox One over the PS4, and atleast the opinion remains true for myself as well. We won't know until both systems are released. Everyone is different.