How dare you ignore the legislative history and political pressures that inevitably precede such measures? Attributing a government decision of such magnitude to a simple drop in investments over a limited period is a gross oversimplification and an insult to the complexity of the legislative process.
The idea that this decline triggers the regulation is a baseless hypothesis that neglects complex political deliberations.
Take Canada as an example, where local content quotas were implemented well before any drastic decline, motivated by cultural sovereignty, not economic fluctuations.
Such a measure is the result of thorough reflection, not a knee-jerk reaction to a statistic.