Normally I agree with your assessments but I don't think you're right on this one. Presuming geothermal wells would have a >100 year lifespan with minimal upke

Normally I agree with your assessments but I don't think you're right on this one. Presuming geothermal wells would have a >100 year lifespan with minimal upkeep the upfront costs may be very large but the long-term cost per/MW extracted would go close to zero because of the virtually non-existent marginal costs for operating geothermal wells. Ignoring externalities created by using fossil fuels for heating (pollution, corruption, etc.), if this technique is sound it could be a more financially sensible decision than any alternative.