the plan is to shift max customers to mpeg4 boxes and those who r not willing to change, company will sacrifice and cease to service those customers and start building fresh customer base, whatever b the case the truth is that tata sky has formulated a strategy and they have decided that mpeg2 technology cannot take them forward, they will retain customers who have mpeg4 boxes or who accept mpeg4 boxes in exchange and will star building more customer base thereafter, those who say that they don't want mpeg4 stb(although i am sure they will b in minute percentage) will have no option but to stop receiving tata sky services
well they believe investing in mpeg4 is more beneficial long term than staying on mpeg2 and investing double money on leasing transponders which are also tough to get as there is shortage, now u must have understood why they want to leavr mpeg2 . they are leaving mpeg2 for same reason bcoz if they don't leave in long term they will loose heavy chunk of customers as they won't b able to add new sd and hd channels as tp space will exhaust and getting new tp is impossible in indian dth segement considering the shortage. mpeg4 is the only forward thinking soilution if they wanna sustain and thats why they have taken this decision