Reduce DNG files size when exporting?

[Egregius ([Greg] (Micro 4/3 + Win11))]

You’re not just denoising - you’re demosaicing. The result is going to be big:

Why are DNGs so much larger than the raw files?

I’m using PureRaw as a stand-alone processor before importing into Lightroom. The results are great, but the size of the DNG files is ridiculous. My raw files are 24 meg to 30 meg in size, whereas the DNGs are 80 meg or thereabouts. Is there a reason for this, and is there a way to get the DNGs smaller? I was originally told that DNGs didn’t have to be that much bigger than the raws, if at all. so this puzzles me.