They (google) could cite the loader being "exploited" to run "dangerous" apps like viruses/malware, and bypass the monopoly issue.

I do think having a technical bypass is good - it isn't mutually exclusive with also having a legal bypass. I just hope that the gov'ts are smart enough, and agile enough, to make this happen before it becomes too late (aka, once the gates close, it will never open again, like apple's ecosystem).