Not a chance.
They can continue to support the PS3 and probably will for a few more years. Though nothing in the level of what happened till this day.
It would all depend on wether the PS3 could produce visuals in the same level as the Wii U. If they did then they can split the market with Nintendo and leave Microsoft to dry because not man would go through the trouble of making exclusives for a console more expensive to develop for. Microsoft would just have its exclusives and the ports of the other consoles. It would be a bit like the dreamcast was.
But, thats a big IF. I am not convinced the PS3 can do things on the level of Xenoblade 2.







