Doge to be abele to flip btc is not even on the cards for me. Because before btc there are so many other coins like LTC, ETH etc which needs to be overtaken and then can somewhere I could relate to it, though that is also very far off. In terms of fees if that is the issue then LTC, BCH etc holds better chance than doge.
So far it's because of Musk participation that's why Doge gained attentions but likewise it's still
bitcoin that have the dominance and if in case other companies like Starbucks and McDonalds
they have team that will review and research the worth in that case there are many other alternative
coins to also have the potentials.