Help! Is there standardization in i2s?

I have been interested in upgrading my Streamer and DAC. If I purchased a DAC and Streamer from different manufactures will their I2s's (sorry) all mate with each other?
If not, will cable manufactures make i2s patch cords?
As I understand it, I2S has no standardization, only proprietary implementations.  That seems not likely to change in the marketplace.
Really, No standard, What year are we in??? I2s has been around quite awhile. Someone better get working on that 😤