People wouldn't be rushing to shift entire markets at the observed rates if the economics were upside down. It is the soundness of the economic model that is driving the adoption even against tariffs and subversion by the current US regime.
This is not as simple as people here make it out to be.
Consider also that solar is profitable today because it does not set the price of electricity in most markets. In a world where solar dominates, the prices of electricity could be negative. The economics of negative electricity prices becoming the norm are not yet fully understood.
Similar to the UK - See item 18. https://committees.parliament.uk/writtenevidence/141240/html...
The existing gas infrastructure represents a large amount of taxpayer investment, not due to be paid off until 2070. But it’s estimated that there won’t be any users of that infrastructure beyond 2050.
Transmission costs.