Mobile network blackspots costing business

Debbie Banks struggles with poor mobile reception affecting her business. The government is considering laws for network roaming to address blackspots, allowing customers to switch networks when their usual provider lacks coverage. However, mobile companies oppose this, fearing it could harm the UK's mobile infrastructure. Debbie supports the idea, believing it would benefit many facing similar issues.

What are the concerns raised by mobile phone companies regarding national roaming?

What is Debbie's opinion on the proposed national roaming solution?