Gambling is Haram in Islam and one should not spend even a penny in Haram things. The father should repent and ask Allah to forgive him and should not do this again. The film industry is at present in the hands of people who do not know and do not care for Islamic values. It is very difficult for an observant Muslim to behave as a good Muslim and work in the film industry. However, this should not stop Muslims who have such talent to develop their own Islamic filming programs and institutions.
Film is a very effective and powerful medium.
It can be a tool for healthy entertainment, moral education and Islamic da'wah. Muslim can use this tool but they have to work very hard. They need resources and sincere commitment to Islamize the film industry. Theoretically I can say that it is possible, but practically it is very difficult at this time. It requires someone with Islamic vision, knowledge and talent to make an effort.