Wow. In other news, the sky is blue.
In a month, 75% of supermarket shoppers buy from a chain that is not their major one.
I promise you, that's not news. 100% loyalty rates for all consumer products are way lower than you think.
And if we consider a period that is longer than a month - say, a year - I'd expect that about 95% of people would have strayed.
Nobody owns a customer. Even the biggest brands only borrow them, mostly.