If you're including every amateur unpaid artist, then sure maybe 0.5%.
BUT if you're talking about paid professional TV and film production (the context of SAG-AFTRA), probably something like 95% of content that is written, shot and edited into a final product makes it to audiences. After all, that stuff is expensive.
By the hour, most of that content is TV shows. Most of the unseen ~5% is produced pilot episodes that didn't get picked up for a full season. And a small amount will be films that halted production midway, or turned out to be so bad they weren't released.
BUT if you're talking about paid professional TV and film production (the context of SAG-AFTRA), probably something like 95% of content that is written, shot and edited into a final product makes it to audiences. After all, that stuff is expensive.
By the hour, most of that content is TV shows. Most of the unseen ~5% is produced pilot episodes that didn't get picked up for a full season. And a small amount will be films that halted production midway, or turned out to be so bad they weren't released.