Lightroom's edits are non-destructive, so the original format of the edited photos exists within Lightroom's database or inside Lightroom's sidecar files. Yes, all my original photos are safe, but they are unprocessed raw and jpegs. I could plausibly render out my entire library and probably should, but it's the difference between a PSD and a PNG.
(I did investigate open source tools back in 2011 but essentially no libraries could even decode the raw format my camera uses for years)
Camera -> Photo Mechanic ingest/culling onto laptop -> edit RAWs in DxO Photolab -> export .jpg 100% for web into "Web" subfolder for event -> pick top shots for socials, export insta-optimized shape & quality into "Socials" subfolder for event -> backup RAW/Web/Socials folder hierarchy to external SSD for backup and upload "Web" subfolder to Google Photos for sharing & "JPG backup".
I keep about a year's worth of RAW edits + JPGs on my laptop before periodically clearing space, and I have some of my overall top shots stored separately on my Pixieset site.
(I did investigate open source tools back in 2011 but essentially no libraries could even decode the raw format my camera uses for years)