I'm buying laptops with preinstalled Linux and then I purge it and install Arch Linux on it. But then I'm at least sure that there are drivers for all of the ha

I'm buying laptops with preinstalled Linux and then I purge it and install Arch Linux on it. But then I'm at least sure that there are drivers for all of the hardware build in there somewhere and I can install them and use everything build in. Also I'm hoping to vote for Linux support with my (or my employers) wallet.