Crane would be way more complex and something like 50x more expensive.
Usually multi-purpose robots cost way higher and requires more maintenance and costs. Given the average labour costs in India with over 10% unemployment in urban areas and much higher in rural areas created by economic mismanagement for second term by the current government. I believe human labour is more versatile and cheaper, if supported by right amount of technology in India. It’s crucial for its development.
Humans can always invent new forms of labor. Limited only by imagination and opportunity. We should be automating everything we can while actively creating new categories of employment for every person