It would literally take you 5 mins to set up your wife with a competing client for her needs.
Sure it's 'sticky' at least a little, but it's not a moat. A moat is a show stopper like they own you.
Idk, habit and the devil you know are powerful as hell. Google has enshittified search nearly beyond imagination, but it's still where the vastly overwhelming majority of people search.
Just like it would take 10 seconds to buy her a Pepsi instead of her preferred Coke.
Would you?