Linux barely exists as a desktop operating system as is. The only difference nowadays is smartphones don't have that freedom of customization desktops provide. Smartphones are consumer centric devices, you can't even swap batteries anymore. Leading OEMs have no interest in supporting an obscure operating system, they know the majority of users want Android.
When Purism releases this as an OOTB product, it will without a doubt run on some no named Chinese Phone that holds the mediocre power of any low end Android Device. Only it will be $600, rather than $180
The company has been doing this for roughly 30 years.
The size of a company is not irrelevant to what a company can do, of course, but it's also not determinative.