What makes remakes flourish or perish?

Many filmmakers and top stars get fascinated by the hit films in other languages and get tempted to remake them and score blockbusters easily in their language. While few of them succeeded in their attempts, few of them burnt their hands and tasted d...
What makes remakes flourish or perish? chiranjeevi,shankar dada zindabad,katti remake,pawan kalyan,katamarayudu,adivi sesh,yevadu