It gets as bad as it has in Myanmar when one doesn't have those laws. If you ban cutting communications, it normalizes the expectation. Cutting communications now becomes personally and politically risky in a way it isn't if it's in the grey area.

For an example, see India's slow slide into authoritarianism in this respect. Cutting communications in Kashmir was legal, but iffy. That normalized, legally and culturally, the mechanism. Now, communications are routinely cut across the country.

All that said, Myanmar fell to a military coup. That's a different failure mechanism from elected leaders getting too comfortable on their thrones.