There's only 3 major companies at this point in the home entertainment system market. Sony, Microsoft, and Nintendo. Microsoft has indicated they want to get out.
When so few companies have so much control over a market boycott becomes pointless as you are basically saying "You need to give up a product you like and there is no real alternative".
That means we need regulation, legislation, and enforcement.
We need better antitrust enforcement and tweaks to to give it more teeth. We should be seeing more corporate breakups.
Memory is in the same boat. There's only 3 major companies producing most of the RAM and they've repeatedly colluded to raise prices.
We need both. 'Buyer Beware' and 'The invisible hand' are necessary but insufficient to correct corporate bad behavior.