I would offer this as evidence that Internet providers do make sufficient funds from their past investments.
Companies have bid more than $30 billion to get a slice of the mid-range frequency spectrum auctioned off by the Federal Communications Commission last week.
Part of the concern highlighted by the net neutrality debate is that providers have or nearly have a monopoly on access opportunities. My concern is that the Internet is moving toward the old system in which only those with great assets control the information we can access or can offer.