I'm currently in San Antonio without electricity. The Xbox and Playstation are completely useless not only without electricity but the digital games on them are unplayable without an internet connection, including the single player games.
Enter the Switch. I've been able to charge it when the power occasionally returns. The vast majority of the library I own is on cartridge. The one digital game I have (Hades) is still playable without an online connection.
Thank goodness for competition that allows for at least one console platform that doesn't require an online connection.