Construction can't employ such large population,and if does then a issue will be created when most infra work is complete , we need to make our supply chain reliable
Of course it cannot employ all of the labour....but it can certainly employ lot more than currently for India to transition to next tiers of economy better....and without huge amount of education investment.
There are simply too many people stuck in agro still, and not enough building stuff that India needs.
It is a real chokepoint....supply really needs to expand here....it is part of reason such labour gets exported too much to gulf anyway (instead of retained in India).
Agro will then also transition to higher productivity just like in TN and parts of south....when this kind of thing happens at large in hindi belt for example.
TN is only major state with 60% urbanisation I believe. More states need to look at what happened there for it....construction sector is one avenue.
Then over time with lot more human resource improvement and education imparted....India can sustainably mass-industrialise and catch the bus for good then.
In interim construction and such allied activities are very key stepping stone to provide value added with timeXpop India has right now to generate wealth to save.