Amazon last year pivoted to making its ad tier the default for its over 100 million subscribers, which instantly turned the service into a streaming-ad juggernaut and the largest ad-supported subscription streamer. Users were required to pay an additional $2.99 per month to watch without ads.The move sparked a proposed class action from users who had signed up for annual subscriptions. They claimed breach of contract and violations of state consumer protection laws over the alleged “bait and switch.”