I don’t think it matters if it’s a top trainer with a stakes horse or a blue collar trainer with an overnight horse. In my experience it comes down to the owner being financially disciplined, if a top trainer goes to the owner,”Said horse is off needs to be shut down for a bit “, that’s the owner’s decision because there paying the bills. Most of the time owners response will be said horse is heavy staked , don’t want to miss up coming stakes, is it that serious can’t we work through it. Blue collar trainer with an overnight horse for and average owner, get slightly different response but same general sentiment, is it that serious horse is racing good can’t we work through it.
Wether it be top stakes horse or overnighters both categories of trainers would like to keep racing but the majority of trainers in both categories know that if they do the outcome with out rest will be negative.
At the end of the day 70% of the trainers , top trainers or blue collar, have the conversation with the owner and it’s their decision because they’re paying the bill.
Comes down to financial discipline on the owner’s behalf.