It certainly is time for an alternative, isn't it.
"... refers to a carrier or service provider's control over applications, content, and media on platforms..."
"More generally ... refers to a closed or exclusive set of information services provided for users"
Though I do disagree with his sentiment. I think App.Net is a perfectly good alternative to Twitter and every attempt at open, federated services since the original one (eg www) have failed to catch-on.