Some of the increase may have come as a result of Spotify's effort to crack down on abuse of its Family plan.
"Notably, later in the June 2018 quarter, Spotify reportedly began to verify that Family Plan members live in the same household. We’ve seen some preliminary data that suggests this tactic has indeed started to move Spotify Premium subscribers to Individual membership plans.”Spotify Paid Premium Grows To 38% Of Users
Spotify Premium subscriptions continue to grow, according a new report by Consumer Intelligence Research Partners. The research showed that 38% of all US Spotify subscribers now have a premium account,. Continue reading [https://www.hypebot.com/hypebot/2018/10/spotify-paid-premium-grows-to-38-of-use