There is not really much of a reason to believe this. Economically successful nationalization do happen. The main reason why the CCP is considering nationalizing Ant Financial is because their economists are afraid of the negative economic impacts it may have.
The same thing happened in my province, where the power generation industry was nationalized for economic reasons and ended up being a massive economic advantage, along with the lowest unsubdsidized rates everywhere in the world.
I think this kind of dogmatic viewpoint is dangerous.
There have been success stories in the healthcare and financial sector too.
That being said, the example I'm giving here is actually a lot more than just a utility company - there is also a profitable R&D arm that did a lot of work on LTO and LiFePO4 that found its way to market, as well as has a successful construction arm.
It also did consulting work for the Three Gorges Dam in China notably but also a lot of other projects.
There is also an electric bus project that is in current development with a partnership with Volvo and Novabus as well as a Chinese/Italian/American/Quebec electric motor manufacturing joint venture, that has shipped a few dozen buses locally and is being considered for international orders.
So, I think that it can fairly be said that nationalized companies can be successful beyond simply utilities and natural resource exploitation.
The same thing happened in my province, where the power generation industry was nationalized for economic reasons and ended up being a massive economic advantage, along with the lowest unsubdsidized rates everywhere in the world.
I think this kind of dogmatic viewpoint is dangerous.