Folks need to read their Bibles more. (It’s the one legitimate complaint Protestants have against Catholics, IMO.). Solomon fell into idolatry in the effort to please all his wives and concubines. Mostly, they were the spoils of war and, shall we say, very well kept! Unfortunately, the king had easy access to them right nearby. If he’d have set up their quarters an inconvenient distance away, maybe it wouldn’t have happened. Or, he could have forced them by decree to convert.
Imagine having 700+ mother’s-in-law!!!