finally supplyside constraints to additional private financing include strict pension investment rules and regulatory restrictions such as basel iii and solvency ii which require more capital allocation for infrastructure woetzel et al in line with this diagnosis multilateral development banks are stepping in by establishing joint investment platforms in which they provide technical expertise capacitybuilding and financing instruments to increase the supply of bankable projects g unctad in many parts of the world infrastructure investment has declined since the global crisis woetzel et al