Make them sign a pre-marital agreement might be one way.
Or make the wife abort any babies.
Your argument is offset by plummeting revenues at the collection basket.
The Church is having to cancel masses and close large numbers of parishes because there just aren’t enough Priests. And the numbers are falling precipitously. There just aren’t enough young men willing to sign-up for celibacy.
Sooner or later married Priests WILL happen, and the decision will be driven by the collection basket.