Just cannot understand how this company survived with a single car with NO SINGLE UPDATE from 70's

This car needs a complete make over which excludes NOTHING.    I think Major man power might have left to Suzuki/Maruthi initially and rest of them to other new companies.  The old retiree's who are still in HM like the same old car.   What else can we expect from the company NOW which didnt care to upgrade for the past 30 years.NothingWhole car