For a person to do something, there are two components: 1) motivation, and 2) activation. Activation is how "easy" it is to get going. Activation has an aspect of mental state to it, and an aspect of engineering (e.g. many dark design patterns work by reducing the activation needed to do what the designer wants you to).
People with ADHD need much more activation than the usual person to get going. So, a common refrain is "I must be lazy, because I can't bring myself to do the things I care about". Once an ADHD person is over the activation hump though, they face a different challenge: stopping. Stopping in a timely fashion is necessary for good health (need to sleep, and eat), and consistent progress (doing a little bit every day is much better than "a lot" one day in two months).
But, whether you have ADHD or not, don't discount the impact of the $$$ spent engineering various services so that they require as little activation as possible. I'm not yet sure what the solution to this is, but I think being aware of the activation/motivation distinction is a good first step to eventually reaching a solution.