I see one of two things happening: Either Microsoft or Sony(more likely Sony) back out of next gen altogether. 360 or Ps3 keep going another few years, then thats it. No next gen. Sony has lost money on the Ps3 since 2006, never earned any proit until just recently. Doesnt at all sound like theyre ready for next gen.
OR, Microsoft and Sony release cheap almost identical consoles to what they have now, with some Wii U -like minor upgrades. People who think next gen from then will be comparable leap again I think are deluded. I think that happening is literally impossible, at least for the next few years. So yes, I would agree with you.
Sony is making profit out of the PS3 now? That's very good news actually, but wait is it making profit as in offsetting the losses overall or just made profit for a specific year?