OTOH, I suspect that if one were to do the analytics, one would find that the regular Plat card people are more likelihood to be less frequent DL travelers on more expensive fares (or higher fare classes), while the Reserve card people are DL FFs and thus would either buy a SC membership or take it as a choice benefit (or use miles to pay for it) if SC access were toe be terminated for Reserve card people. Thus, if numbers are roughly equal, ti would be better for DL to keep SC access for those with the regular Plat card (who otherwise might take another airline) and terminate access for Resaerve card holders if one of these choices were necessary.