The analogy to Blockbuster is not appropriate. If I remember correctly most of Blockbuster's rentals for new movies was about $2-$3 (actually about what it is at Family Video today). That $2.50 in 2000 is nearly $4 today which is the price for most HD Amazon streaming rentals.
If you go the $1 old releases then Netflix is about 9 films/mo. ($12/mo which was about $9 back then) in today's dollars. This is without the possibility of binging series which wasn't a thing back then. I used Netflix to binge a bunch of series like Breaking Bad, Dexter, Sons of Anarchy, and American Horror Story. There are probably more than 2,000 series. I counted 1,000, and I was only up to the M's.
You have to decide whether the original content is really worth it. I enjoyed the MCU shows and Black Mirror.
Probably the best suggestion I have heard is to sign up and cancel on different services. Right now I have Hulu for $1/mo (about all it is worth as far as a I am concerned), Netflix (which I a seriously considering cancelling with the departure of the MCU shows), Amazon Prime (which I think gives the best value because I use their Prime Music a lot as well - many of my favorite albums without paying for Spotify or listening to the ads as well as the free shipping), CBS All Access (my wife has to get her Survivor fix and I watch the new not very good Star Trek), and Great Courses Plus at $10/mo. which I use the most.
Right now I just binged the first three Final Destination movies since the ice is keeping me inside. That would be $12 on Amazon, and probably $6 on Family Video.