I call it crass commercialism and I very much dislike losing the names of historic and more recent sporting venues.
Melbourne: Docklands Stadium. Telstra Dome still gets a gig and is on some tram destinations but now Etihad Stadium.
Hobart: Bellerive Oval. Such a beautiful name for a lovely ground, now Blundstone Arena.
Geelong: Kardinia Park, was Skilled Stadium, now Simonds Stadium.
Perth: Subiaco Oval, now Patersons Stadium.
Carlton: Princes Park, now Visy Park.
North Melbourne: Arden Street, now Aegis Park.
Launceston: York Park, now Aurora Stadium.
Canberra: Manuka Oval, now Star Track Oval.
It is not just football grounds.
Melbourne Tennis Centre (part). Let the government name it and you get Multi Purpose Venue. In this case Vodafone Arena was preferable, now Hisense Arena. Most people still refer to it as Vodafone Arena.
Do you have any more to add to the list?
Another just occurred to me in Sydney, the Olympic venue Homebush Stadium, now known as ANZ Stadium. Blah!