The 58-year-old co-founder spoke at a press conference in Los Angeles recently, where he said the streaming giant - currently the largest in the US - will not be partnering with Tim Cook's firm's rival app, which is being unveiled next week.
Asked how Netflix will be able to cope with rivals in Amazon and Apple, he replied: "with difficulty."
He added: "It is definitely getting more expensive to source content."
In 2018, new data confirmed that video streaming services like Netflix and Amazon Prime have more subscribers than traditional pay TV services in the UK.
The traditional broadcasters were required to change the way they operate to compete with their wealthier rivals, according to industry regulator Ofcom, who admitted it would be "great to see a British Netflix".
Sharon White, Ofcom's chief executive, explained to the BBC at the time: "We'd love to see broadcasters such as the BBC work collaboratively with ITV, Channel 4 and Channel 5 so that they have got that scale to compete globally, making shows together, co-producing great shows that all of us can watch.
"I think it would be great to see a British Netflix."
Now BBC and ITV have joined forces to create BritBox in the UK.
ITV CEO Carolyn McCall, said: "BritBox will be the home for the best of British creativity - celebrating the best of the past, the best of today and investing in new British originated content in the future."
BBC Director General Tony Hall, added that it's "a new streaming service delivering the best home-grown content to the public who love it best. The service will have everything from old favourites to recent shows and brand new commissions."