Graal started as Project Maxime on Sun Research labs, back in 2005.

Oracle kept Sun Research labs, Maxime eventually became Graal, absorbed lots of PhD work specially from the Linz university, and became integrated into the official JDK in 2018, 13 years later.

The opening line of Project Metropolis, was how Java should look like in the next 20 years, and lets be honest it remains to be seem how long Oracle will be committed to it.

I know you are aware of all this, given the very good comment you posted, but I guess the big question is if Microsoft is also willing to spend the same amount of money into, lets say, using .NET Native to rewrite the CLR in C#.