Well yes, hydro and geothermal are the easiest (and earliest perfected) renewable sources to provide consistent base load. It would be odd if the first countries to achieve fully renewable power weren’t making use of those technologies.

Other countries will have to be more reliant on interconnects, diverse renewable mixes and batteries. Luckily this is now almost always cheaper and more secure than fossil fuels and the trend lines point towards that continuing to be more and more true over time.