Indian producers do. That has always been the mentality.
At best he will only try to launch his family friends daughters. Exception were only Sneha Ullal & Zarine Khan. That was clearly motivated by the break ups.
Big B romanced Shilpa Shetty & Manisha Koirala in Lal Baadshah. He was 57 while Shilpa was 24 & Manisha 29.
Dr. Rajkumar was 52 when 16 year old Sulakshana was cast opposite him in Haavina Hede in 1981.
Rajinikanth was 26 & Kamal Haasan was 22 when a 13 year old Sridevi was cast as lead heroine opposite them in Moondram Mudichu (1976).
Sridevi again 13 years old was cast opposite 50 year old Prem Nazir in Malayalam movie Thulavarsham the same year.
When Sridevi did Taxi Driver, she was 15 years old & her hero Jaishankar was 40.
Sridevi was 16 years old when she played heroine to 56 year old NTR Senior in Vetagadu (1979).
Sridevi was finally 18 when she played heroine to 57 year old Akkineni Nageswara Rao in Prema Kanuka (1981).
Hansika Motwani was 16 when she starred opposite Himesh Reshammiya & also Allu Arjun in her respective debut films in Hindi & Telugu.
A still from Vetagadu. 16 year old Sridevi with 56 year old NTR Senior.
A still from Thulavarsham with 13 year old Sridevi with 50 year old Prem Nazir.
15 year old Sridevi with Jaishankar (40 year old) in Taxi Driver.
Hansika was 17 when this movie with NTR jr released.