Of course, short term, the quality of the game experience is going to determine the initial response in terms of Index and VR sales, but long term, the quality

Of course, short term, the quality of the game experience is going to determine the initial response in terms of Index and VR sales, but long term, the quality of the development tools is going to be a major factor, just like with HL2 and source. If the tools are easy to use, and allow for any mildly motivated individual to create original, unique, immersive, interactive, hands-on experiences (especially co-op or pvp multiplayer), it will truly be a new era of video game creativity.