Despite the sunny promise of version 26.1's July 24, 2018 release note ("Drive File Stream now guarantees that it won't use more than 20% of the free local disk space when caching files."), Google Drive File Stream cache continues to fill up virtually all available space on many drives.
Heinzelmann's solution of setting ContentCacheMaxKbytes to 100MB is excellent but incomplete; these are the steps I needed to follow in order to resolve the issue:
Windows Registry Editor Version 5.00
/misc | Sep 29, 2019
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