Is this like saying something like "if enough people self-sacrifice by donating to support public goods, it can be stable enough and we all get public goods, ev

Is this like saying something like "if enough people self-sacrifice by donating to support public goods, it can be stable enough and we all get public goods, even if others freeride"? In other words, a critical mass of cooperators can keep going and support one another even if they are suffering from the effect of defectors who all still have incentive to keep defecting. Right?