The entire industry knows it , the Docker devtools brought containers to the mass but anything beyond that is being taken by Cloud Vendors / Redhat etc...
The Open Container Initiative contributed massively to make Docker the standard for container but also for other initiatives to replace it....
I personally believe it will also be its death sentence, seeing how many competitions are coming to get a better / simpler container tool chains add to that a lack of leadership after the founder left with a big check from the fundraising it’s just a matter of time before Docker goes bankrupt.