Hey! Nice concept, gut says yes, especially with the news the way it is. Have you gotten any data or done some market analysis? Are there other players like this in the market, how do they position themselves, how do they communicate and what's their target audience? Then see if there's space for you and your service. How is it different from theirs?
I guess it'll all come down to HOW you market it, I'm sure there's small to medium businesses interested in switching, but try to find both emotional and rational reasons for them to do so and see if you fill those needs.
Sure, owners will dislike Trumps policies, but what'll make them change is more likely a) US services becoming unreliable and threatening their business model and b) FOSS/Made in EU becoming a big selling point for their customers.
Then your communication could go along these lines of: "Scared for your data and information safety? Losing sleep over the future of your company in unstable times?" as well as fomo: "Don't miss out on the EU/FOSS hype train and gain an advantage over your competition!"