An Alstom SA employee Works On A Turbine Unit In Belfort

An Alstom SA employee Works On A Turbine Unit In Belfort

Simon Dawson/Bloomberg

The French government has had its ability to buy Alstom SA shares in the open market capped by regulators, raising the potential cost of becoming an anchor investor while General Electric Co. proceeds with a $17 billion deal for the power-turbine maker.