Comment by CaptainZapp

That's also a major reason, why big infrastructure projects are usually implemented in time and (mostly) in budget.

Once a project is approved by popular vote (the Gotthard Base Tunnel[1] being a good example, but not the only one) this means that funding is secured and can't be pulled, or siphoned off due to political changes.

It's not unfalable, certainly, but works for most large projects.

Once approved it's also accepted by the "losers" and not subject to political whims

One of the most important aspects of the Swiss system is that it's not that the majority vote steamrolls the minority, but that compromise is actively thought out.

For better or for worse. Because decisions can take a long time. Overall, though, it seems to work quite well.

Note: that's a bit of an idealistic view. But I'd wager that it's mostly correct

[1] https://en.m.wikipedia.org/wiki/Gotthard_Base_Tunnel