[wahern]

Maybe the difference is that the Sikh community is much tighter knit than most immigrant communities. We're probably overlooking that the East Asian and Mexican communities that predominate in certain industries are often sub-communities that are tighter knit than they seem--e.g. Jalisco emigrants in some parts of the Bay Area--but even so I wouldn't be surprised if the Sikh community is especially close.

The tighter knit the community the more they can act deliberately to quickly and/or comprehensively achieve some goal. An obvious contemporary example are the Patel families in the hotel industry. Both the Patels and Sikhs have long-existed as distinct socio-economic groups in India. Sikhs are arguably a nation, although that cuts both ways in terms of how relatively tight-knit they may be.

Self-driving trucks may be coming but don't discount the long-tail of traditional trucking business that we'll see. Declining industries can be extremely profitable, especially with enough focus. Mustering the capital to keep investing in the best opportunities can be difficult because the future growth isn't there. Tight-knit communities are particularly well suited to exploit those opportunities precisely because of their funding networks and labor specialization.