The WiMax Forum is supposed to help settle on an approach that implement the IEEE 802.16a point-to-point wireless spec: But the sheer range and nature of the protocol might result in several incompatible approaches. Intel's involvement might focus efforts in one direction.
The article's side note that the 802.11g pre-ratification rush in the Wi-Fi space means even the Wi-Fi Alliance has found it difficult to maintain the original promise of interoperability is unfounded. I was dubious about the early 802.11g gear, too, but the rush was towards a single standard, not towards several. Ultimately, the IEEE approved 802.11g in summer and the Wi-Fi Alliance certified gear shortly thereafter.