I did vote yes, because once I find a product or service that I'm happy with at a reasonable price, I tend to buy it again and again.
That doesn't happen for no good reason though. I'm certainly open to brands other than the one I bought last. I compare, ask questions, research stuff online, check Consumer Reports, and maybe try several different brands. If a promising new brand (or generic) shows up, you can bet I'm going to check into it, and maybe even buy it.
For lots of types of things, there will be several brands/off-brands that I've found to be acceptable and would purchase regularly, depending on the sale price/price per unit. I'm the guy you see shuffling through a handful of coupons and using the cell-phone calculator to help me decide which brand of cat litter, garbage bags, toothpaste, or deoderant. (Degree and Mitchum are my two deoderant brands, I've tried dozens of others).