I can't find evidence of this "routinely collected ransoms ten or twenty times larger than what they got from Colonial" claim. Colonial is rumored to have paid

I can't find evidence of this "routinely collected ransoms ten or twenty times larger than what they got from Colonial" claim. Colonial is rumored to have paid out ~$4mm. Every source about Darkside seems to cite a "between $200,000 and $2 million for the file decryption key" range. This would put the Colonial ransom far above their typical payout.