@mrcorbo Movies and TV shows exist in a different economic model to games both in terms of production and distribution costs and attachment/engagement (sales) costs, not to mention the market for TV and movies being vastly wider than that of video games. I think the Netflix graph demonstrates how different they are so it make be a relatable basis upon which to anticipate GamePass growth.
Don't forget that Netflix have re-invented their service a couple of times, it used to be a DVD rental by post service before streaming kicked in and Netflix's more recent growth came following Netflix Originals - starting with House of Cards. Netflix put out new TV shows constantly and have such a large audience that it's easy for them to entice content into the service.
I'm not sure how Microsoft could entice more non-Microsoft AA/AAA games into GamePass, they'd need to subsidise the outright sales losses.
The graph was simply to illustrate that it took time for Netflix to gain traction. GamePass should be expected to also be a slow build until a tipping point is reached where content/accessibility/market acceptance trigger more explosive growth. They may never get there, but right now it is very early days and judging the service's potential by it's market penetration right now seems premature.