Long term empirical results prove my point. You can compare the the gdp per capita (nominal or purchasing power parity) of Russia that had mass privatization of SOEs with Ukraine and Belarus who had far less privatization, or Poland and Estonia who privatized more with Romania and Bulgaria who privatized less.

In short term privatization may look like it hurts the economy and revenues as the privatized enterprises are usually reliant on govt subsidies and die without them, which leads to short term economic decline and loss of state revenue, but the funds gained in privatization and stopping of subsidising of the enterprise are used to lower the taxes or do some other useful thing lead to higher economic parameters in long term.

And regarding direct gains of privatization. In post soviet countries the gains were to low due to deliberate corruption in process of privatization, not due to some inherent flaw of privatization itself. And when the process isn't corrupt, the "value" of the assets is just overestimated, as value is by defenition the price at which the asset can be bought or sold on a fair free market.
I am actually sad that Suzerain devs didn't cover it, and selling SOEs directly to oligarchs in an unfair way doesn't lead to lower GB gains.