Nah.

From what I've heard from folks who used to do bricks and mortar distribution, that 30% is _way_ better than what you'd get cut out in that system. [0] From the perspective of the person publishing a video game, you also get waaaaaaaaaaay more for your cut with Valve than you'd get in a B&M distribution. _So_ much more. The same is true for the purchaser and player of video games.

[0] If for no other reason [1] than the fact Valve will sell your game forever, unless some government or powerful payment processor very strongly demands that it not be sold.

[1] ...and there are many other reasons...

Yes, they could drop the price for indies but they do have progressive tiering, at top you pay 20% to them and by revenue split it's much closer to taking 20% cut on average than 30%. But yes, indies are being a bit screwed there.

... if not for the fact every single cheaper platform will still get you massively less sales just because they can't compete on feature, let alone popularity of Steam.

Also the 30% funded ability to play games at all on my Linux box so I'm fine with paying the extra.