GameMaker HTML5 is really too expensive. However, if GM Studio is about USD400 with IOS, Android, MAC and Windows exporters. I think that this price is not expensive. Many game companies will be willing to buy and use GM Studio to develop games.
A game company only need to develop a game once in GM Studio. Then four different versions for the four platforms of this game can be exported in the GM Studio. However, if this game company uses four different traditional programming tools to develop a game for these four platforms, a lot of time is needed. Using GM Studio will save a lot of development time. Time is money. Many game companies will really use GM Studio.
Similarly, if Construct 2 will have IOS, Android, Mac, EXE exporters, many professional game designers and graphic designers of the game industry will also buy Construct 2 and use it to make commercial games!