Neither does Xojo IMO. Back in the days when it could make a single .exe, they could. Now, not only your code is compiled but you need a whole bunch of external .dlls to make it work on Windows. I consider this ‘their’ runtime.
Not at all
This is MS C runtimes as of late
And you have always with MS app had options about how to deply
Put DLL’s next to the EXE (got check out an office install) or install them
The old "single file exe’s were admittedly a hack that happened to work but somewhere in archives Aaron explains why they could not do that any more
Static linking of plugins wont work for myriad reasons
Single file exe’s for java are … interesting - GraalVM for instance is one that wraps the JVM and you code into a package that can run