Before packet switching networking was implemented for telephone, making a long distance call required two copper conductors from end to end, often by multiple operators working in tandem. There were a limited number of lines between Canada and the UK so there were long wait times for an open line. That's what made long distance so expensive and that's 'WHY they don't make new telephones to make long distance calls WITHOUT a computer.'
Modern fibre networking allows for millions of simultaneous phone calls over one conductor with all switching being done automatically by computers. Long distance costs for telephone companies have been reduced by several orders of magnitude. Costs to consumers have not kept pace, especially with well established telephone companies. The prices paid for long distance calls are close to 100% profit. Long distance charges are simply a way to pay for company management and investors top 1% lifestyles.