he owns content-heavy (mostly outbound) network , as6939 is not eyeball. so he has to do peering for their own good... they gained tier 1.5 position thanks to their peering links. they are not in position to change peering policy to selective or restrictive until they convince cogentCO to peer them feeless (hopefully never! thanks to god!) think big, think wide-open. dont be a fanatic of freeloaders of IXPs/ISPs... most datacenters peer for free, as they are/would be happy with ratios. sincerely.