schemes like G1G1 might not be as suitable for our economy but selling laptops in bulk to urban private school won't hurt either. Since government is keen on moving the OLPC concept forward they should atleast play the role of implementer and leader with large community base supporting them at back. OLPC could be integrated in current government plan to mobilize graduate student to villages in order to facilitate education. Thousand of students graduating in technical discipline per year, if can be mobilized on little fraction to volunteer in OLPC will surely become large technical support base on long run. These schemes could fundamentally save deployment and development cost off the project.
These are all my calculation which may or may not coincide with all, but local level fund generation will certainly be effective then 100% donated laptop, atleast from ownership and sustainability point of view.