What does it mean to have access to a liberty that is beyond your means to access? Everyone has the liberty to walk in a public space, but what if you are wheelchair bound? Say government stops taxing and you gain complete liberty over your income, but what if you were unemployed to start with?
Whether your social welfare criterion is utilitarian, Rawlsian or somewhere in between, an increase in accessible liberty rather than an increase in liberty itself may be a better policy measure for classical liberals. Maybe then, Government does have a place in intervening to improve liberty’s accessibility.