Mismanagement and corruption at state-owned companies have had a knock-on effect on ports and road transport, hitting efficiency and dampening investor appetite.
The restrictions have increased more than five-fold in the last decade to a point where 10% of the global value of exports is subject to at least one measure, the OECD says.
South Africa produced an energy-transition plan last year that estimated it will need 1.5 trillion rand ($82 billion) in investment over the next five years.