and it doesn't make much sense for them to run one
if blockstream as a DNS seed maintainer set themselves up as just a 'spoke' 'routed hop' between hubs can make 1penny from 7million users a day each
they can repay their $70million VC DEBT in 3 years. especially seeing as how blockstream are VC partnered with coinbase and bitpay anyway
http://dcg.co/portfolio/#b-bitpay
-blockstream
http://dcg.co/portfolio/#c-coinbase
so DCG get the blockstream debt paid and it also helps DCG get repaid by coinbase and bitpay. all due to the corporate partnership