In Argentina during the struggle of the 1970s, and 80s, gradually there were fewer reports of torture and extrajudicial executions. This was not because the Argentine government was not practicing torture and execution as systematically as they had before; it was because there were fewer and fewer people to torture. Through their methods, they were successfully decimating the opposition, and even destroying popular support for the opposition The strategy of the opposition was also partially responsible for this.
The standard response of a government to any type of armed guerrilla warfare against its security forces, is to punish the population. Any popular resistance movement needs, by definition, popular support. Because it is not easy to identify and capture guerrilla fighters, the government instead targets their support base: the people. Any successful guerrilla campaign must be preceeded by the creation of broad and committed grassroots support, because, of course, the public will suffer, and they must be ready and willing to endure that.
Targeting security forces invites their retaliatory response, which is likely to include collective punishment against the population. That means intensification of repression.
Targeting the interests of investors invites them to reassess their investment choices.
Remember, the security forces exist to deal with your opposition, they exist for violence; to commit it and to absorb it. A soldier or a policeman in the street is a disposable piece of machinery for the government, any government. At the higher ranks, of course, this is not the case, particularly intelligence officers. But the average soldier or policeman is of no consequence. Incidentally, security equipment is also disposable, and it should go without saying that the population is also regarded by the government as disposable.
You cannot pressure someone by threatening what he does not value. You cannot defeat him by depriving him of what he is willing to lose.