It could be assumed that, if BT was indeed enjoying such a substantial advantage in the form of an exemption from marginal taxation on new fibres, its market share would be significantly higher.
On peut supposer que, si BT bénéficiait effectivement d'un avantage important sous la forme d'une exonération de l'imposition marginale sur les nouvelles fibres optiques, sa part de marché serait bien plus grande.