A laborer is worth his wage. Even if no one is still making money from this or that particular content you're watching, a streaming service like Netflix will use the revenue from subscriptions to continue to produce new shows or movies. This creates fairly-paid jobs for actors, writers, producers, and all manner of supporting staff, including the teams that maintain the internet infrastructure that helps us access this content.
It's best for the common good to pay a fair price for media and convenient streaming, rather than torrenting it.
If you want to own digital media, buy a copy outright (such as on DVD), and you can do with it as you please, within reasonable limits.