The government of a country enforces laws by punishing those who break the laws. However, the punishment mechanism is not enough. So governments introduce different schemes and programs to stop people from breaking the laws.
International laws can also be enforced by punishments such as sanctions. However recent developments particularly in Russia and Israel have made it clear that punishment alone is insufficient. Russia could find other ways to bypass sanctions and Israel ignores international laws and recently devalued the UN Security Council’s resolution, paving the way for all sorts of international irregularities. The necessity for new mechanisms becomes apparent in a crisis. When old mechanisms fail new ones should be developed.
Israeli hardliners for decades tried to be outside of the spotlight so they could quietly break international laws by expanding illegal settlement for example. But the Gaza war brought all those illegal activities over the past decades into the spotlight.
The punishment mechanism is insufficient especially internationally. The participation mechanism then is a suitable complement for that. When a structure is in the development phase, the right to participate is attained for countries which abide by international laws. When sanctions cannot be effectively imposed politically on some countries, the private sector should step up and do its job.