Expansionist budget European operator Digi Communications is in a crucial stage of growth. It has achieved plenty of market share gains, both as an MVNO and MNO, but next it must transition from challenger to money-maker to make good on its investments. Those with a long enough memory will remember Digi’s earlier attempts at expansion in Europe, which led to TV units being shuttered in Slovakia, the Czech Republic, and Croatia. After years of stable business in its home territory of Romania, Digi has been on the path of growth again in recent years, expanding with a quad offering in Spain, Italy, Portugal, and Belgium. Digi has been active in Spain as an MNO since 2008, and this year secured…