There is no reason to do long term projects with public funds. Private companies are not subject to the vagaries of democracy and can plan as long-term as they want.
Except funding is not everything that's needed for long term projects. There are other resources - workforce, supply chain integrity, legal entitlements and approvals, etc, that are all contributing to "plannable delivery" of long-term projects. And quite a few of these are very much subject to the vagaries of democracy.
Unless, of course, you assume (the ideal to be) an entirely anarchist business environment where whoever-with-resources can do whatever. Democracy, though, is not that.
Unless, of course, you assume (the ideal to be) an entirely anarchist business environment where whoever-with-resources can do whatever. Democracy, though, is not that.