the new rules on logs and not follow a court order should one be given. Get your heads out of the clouds...
. The problem is, there is no law regarding for how long ISP's have to initially retain logs. Correct me if I'm wrong.
You are not wrong. No set maximums/minimums. ISP is free to choose none to 5 years if they wanted.
almost impossible on large scale systems ot not have some logs and for spamming and bad things that can happen you might think a month is prolly the min that could be doable in scale.