To add to what LoRdTAW said:
The landscape of computer education has also changed tremendously, and for the better. Whether this was stimulated by the OLPC project or not is an open question, but there has been a change.
Computers in education pretty much meant a computer running a web processor, a word processor, and a smattering of poorly designed educational products when the XO-1 was introduced. Since then the "constructionist" philosophy of Papert, which was the framework of computer education in the 1980's, has reemerged. Many projects have been started to develop more comprehensive computer curricula and educational resources (e.g. lesson plans and software). The available software is more flexible in both lesson design and their philosophy of education. Self-directed resources have also improved. When the XO-1 came out, they were mostly geared towards reading and viewing. Now we have a large element of collaboration.
While it is sad to see the demise of the OLPC project, the demise reflects many positive changes in the landscape of education.