Next year will be a defining one for Netflix, which will face more competition than ever from formidable media and tech titans like Disney, Apple, and WarnerMedia. The streaming service will have to prove that its business model, which relies entirely on subscription revenue, can hold up against companies like Amazon and Disney that have many ancillary sources of income. Wall Street and investment analysts break down the five key questions facing Netflix in 2020. You can hear this story in audio format or read in text below.Listen to more Business Insider audio stories.Listen to the story in audio format: Read the story in text format:2020 will be the year that defines Netflix's future. Analysts break down the 5 big challenges it faces.