Recognition from top award networks highlights two key characteristics from streaming sites, according to experts.
"(First off), Netflix and Amazon are prepared to invest comparable amounts of money to linear TV channels in original programmes, so they are able to compete for the best ideas; and (secondly) producers are happy to pitch them ideas and work with them," Tim Westcott, principal analyst for TV programming at IHS, told CNBC via email.
In December, Netflix announced it was doubling its original programming in 2016, delivering 31 original series on top of more documentaries and films. For 2014 alone, Amazon invested $1.3 billion in Prime Instant Video, while both platforms have drawn in big Hollywood stars to push their content forward.
"I think partly it's reflecting the fact that they're now confident enough to make heavy investments in high-quality titles for their services, which is being brought out in the awards/potential awards they may win," Richard Broughton, research director at Ampere Analysis, told CNBC over the phone.