This was bound to happen, all the other credit companies have put in similar restrictions as their lounges have gotten more popular.
As of February 1, 2026, no free guests ($45 for adults, $25 for kids), and additional cardholders have to pay a $125/year fee for lounge access. The days of a family getting one card, having the spouse be an additional cardholder, and the kids get in free as guests, are over early next year.
https://onemileatatime.com/news/capital-one-venture-x-lounge-access-changes/