Although, nothing is revealed yet. But it seems that there is a possibility that none of the government authorities take part of the infrastructure development needed for the 2022 World cup. I think Companies like QD & QF would take a leading role With the assistance from their joint ventures.
Just last week Qatar Holding (QH) bought a 9.1% stake in Germany's largest construction company, Hochtief for €400m , Reuters has reported. As part of the deal, Hochtief is to locate its Middle East headquarters in the Qatari capital, train local staff, and run a research and development facility. It was also reported that only 4 bn will be allocated for the development of stadiums out of the pledged $100bn.