the cost of discs does not add much to the cost of the product they 2 a penny as the saying goes, so not having them wont reduce the price
as to industry costs well they need to reduce them if they are spending more than they make
EA (though not liked much
) made huge gains and even more profits than 2011 with turnover of over $4billion and quite a nice profit of over $200million
and little Mojang making around $50million in net profits
its possible to make games and as the latter shows give them away and make money