The Science of Domain Registration
Everyone wants a clever "findable" domain name. Those ending in ".com" are the most valued by businesses, followed by .ca for sites in Canada. A common mistake is to obtain a domain name that reflects the name of the company as opposed to what the company does. "Franks Widget Sales and Service' of Penticton should register "pentictonwidgets.com".
Different domains can resolve to the same website. It would make sense for Frank to also register "pentictonwidgets.ca" along with "frankswidgets".
Domain name registration only costs $15 per year. Regard it as "cheap insurance" against a competitor stealing your internet customers with a domain similar to yours.