Those interest rates don't move on their own. If the competition changes, those interest rates change too. For example, if the share outlook for the next years

Those interest rates don't move on their own. If the competition changes, those interest rates change too. For example, if the share outlook for the next years looks unusually good/bad volatile/stable (compared to how it looked a couple of years earlier), then that makes shares more/less attractive to investors, and bond issuers have to adjust the rates they offer.