Is FDI and Hathway same ?
Hathway is the main company (parent company) which has its operation in Mumbai, Delhi, Pune, Blore, Hybad, etc.
Hathway has many subsidiaries that also operate in many cities which are owned by the parent company.
In some places Hathway is in a JV, alliance/affiliation.
Both GTPL and FDI are a JV and are subsidiaries of Hathway.
In some areas GTPL and FDI are independent, like they sign own agreement with broadcasters, hence u must have seen the channels that go off air or are blocked by hathway are not blocked by these MSO.