Every single social platform has tried to do this and failed. Once a platform reaches critical mass the bits, scammers, etc… move in and start exploiting any “honour” mechanism that might exist.
Probably the best I’ve come across is ycombinator news but that’s pretty niche.
Why is military procurement such a bloody mess in this country. Truly don’t understand. Get something that’s good enough to meet the baseline requirements and then apply a local spending/manufacturing lens. Done.
This need to always purchase the absolute best and not build local manufacturing is a real buzzkill.