Finally a few numbers on German PayTV / OTT:
Sky as a traditional Pay TV service had 4.8 million subscribers by the end of June 2018. A recent study by Ampere analysis suggests that Netflix reached 5.1 million subscribers in Germany, and Amazon Prime Video tops the list with 9.9 million subscribers - although it is unclear how many actually use the service as it is bundled with the e-commerce offer. It would be interesting to have numbers on viewing hours, but we're not that far yet.
Hard to believe for me, but based on these 10 million Prime customers maybe reasonable: 54% of German households have two OTT subscriptions, 12% more than four (!).