FWIW, the NEX line is also Alpha cameras/lenses. Only it is Alpha E instead of Alpha A.
In that case, one must say that m4/3 is also 4/3 lenses. That doesn't improve things much for Sony I'm afraid. You want a standard zoom? There are at least seven available in 4/3 mount from Panalympic alone. Then there's Sigma. Telephoto lenses? An abundance, anything from the cheapish 70-300 to the stellar 300/2.8 or the 150/2.
While most people only buy and use a few lenses, they are often looking for a particular combination of focal length, aperture and quality. I was very enthusiastic towards NEX when it was launched, but after trying their widest lens, the 16mm (is it still the widest?), and waiting it out for a couple of years, I find m4/3 totally superior as a system. The larger sensor is nice, the lens selection isn't. The fact that only the top model has a built in viewfinder is the final nail for me.
I hate to be negative, but I'm afraid that Sony is in for a long, uphill struggle here, and their coffers aren't as deep as they where during their heydays. I've also noticed that they keep complaining about the world economy and a diminishing markets. That hasn't prevented Samsung from crushing their market share on the TV arena in a steamroller like manner, so the market isn't diminishing for everyone. There seems to be something wrong with the attitude at Sony at the moment, and attitudes come from the top. When one sees what Olympus has been able to achieve under their corrupted leadership, one can wonder what is going on at Sony's board meetings.