"Capitalism" revolves around maximizing what can be owned as capital, including by divvying up what would otherwise be the commons by creating various types of imaginary properties.
One type of capital is government-created privileges obtained through regulatory capture, that keep upstart competitors from entering a market. If you're arguing for having fewer regulations, then you're actually advocating against capitalism! Contrast with focusing on "free markets", which at least keeps the emphasis on the competition mechanic rather than the suffocating dynamic of rent seeking.