How does Source and Steam fit together? Would it make sense to lower a potential fee for Steam exclusive games built on Source? Would it be "risky" trusting the same company with both the game engine and distribution? It's really great seeing Source 2, Unreal Engine and Unity lowering the bar for game developers to deliver their products.
In the broader picture... I'm not sure. I keep thinking about the video game crash of '83, and how market oversaturation crippled American video game makers for years. I wonder if the constant lowering of barriers to entry isn't hastening something similar. (Probably not nearly as bad, video gaming is a lot more mature as an industry right now, but still.)