Sony has released all the data needed to make lenses with complete electronics control for the E-mount. Very un-Sony like indeed.
However, I do not agree with OP.
As it stands now, the only companies with MFT autofocus lenses out in the market are Panasonic, Olympus and Sigma.
Panasonic and Olympus will obviously release lenses for their own systems.
Samyang, Cosina Voigtlander, and SLR Magic have released MF lenses for MFT system.
Sigma made a 19mm and 30mm lens, and those were designed for an APS-C sensor, and simply shipped with a MFT mount, but were firstly designed for Sony NEX system.
On the other hand, Sony, Sigma and Tamron have all released autofocus lenses for the E-mount already. As you can see here "Sony Releases E-mount Specifications"
, Sony has already released the required data without any royalty. Samyang and Tokina, as well as Cosina (for Voigtlander lenses) have already expressed interest in releasing E-mount lenses, with Samyang already having released a 8mm f/2.8 manual focus fisheye lens for the E-mount, and has stated that autofocus lenses are coming in 2013 for the NEX system. Also, SLR Magic has released MF E-mount lenses as well, and it is easier to adapt Leica M-mount lenses on the NEX system vs. MFT system (both given the size (diameter) of the E-mount and the 1.5X crop factor vs. 2X crop factor of MFT)
Do not forget that the entirety of the Sony A-mount system can be effectively used on the NEX system with one of two Sony supplied adapters. Size notwithstanding, that is a lot of lenses. Sure, the number of native E-mount lenses are nowhere near the MFT system, but that is changing, and what IS already available is of excellent quality.