Conversation so far:
How was Netflix started?
Originally, CEO Reed Hastings told several outlets said he got the idea for Netflix after Blockbuster charged him a $40 late fee for “Apollo 13.” ... When it arrived in one piece, they decided to start Netflix.
How did Netflix originally work?
Netflix was launched on April 14, 1998, as the world's first online DVD rental store, with only 30 employees and 925 titles available, which was almost the entire catalogue of DVDs in print at the time, through the pay-per-rent model with rates and due dates that were similar to its bricks-and-mortar rival, Blockbuster
What is Netflix's relationship with Blockbuster?
Netflix CEO Reed Hastings approached Blockbuster CEO John Antioco. Hastings wanted Blockbuster to buy Netflix for $50 million.
When did Netflix shift from DVDs to a streaming service?
Two years later, in 2007, America saw the launch of the feature Netflix is best known for - streaming. That year also saw the beginnings of a move away from the traditional DVD rental format
What are Netflix's other competitors than Blockbuster?
The biggest competitive threat to Netflix is probably Amazon.com Inc. (AMZN).
How does Netflix compare to Amazon Prime Video?
If you are not a Prime member, you can subscribe to Prime Video for a flat rate of $8.99 a month. Unlike Netflix, Amazon Prime Video has no tiers for HD or 4K HDR content.

Question: Describe its subscriber growth over time
Self-contained rewrite: Describe Netflix's subscriber growth over time.