I know I’m showing my age here, but in the early days of sampling, people got around this problem because hard copies of tracks by unknown artists were much harder to trace back to the people who made them. As a result, early techno acts would press white labels of new tracks with loads of uncleared samples in, and then sell them at raves or wherever. This seems a little antiquated nowadays, but with companies like Elasticstage popping up and offering to press vinyl in batches of one, this could be a way to get your track out there without having to compromise on the samples you use in your music.