Their success rates on HackerOne seem widely varying.
22/24 (Valid / Closed) for Walt Disney
3/43 (Valid / Closed) for AT&T
> Their success rate on HackerOne seems widely varying.
Some of that is likely down to company policies; Snapchat's policy, for example, is that nothing is ever marked invalid.
Walt Disney doesn't pay bug bounties. AT&T's bounties go up to $5k, which is decent but still not much. It's possible that the market for bugs is efficient.