Telstra offering a 30% discount on NBN plans for three months is a marketing strategy aimed at attracting new customers and potentially retaining existing ones. Positively, this can lead to increased subscriber numbers for Telstra and offer consumers more affordable internet access. Negatively, such aggressive discounting can impact profitability margins and potentially trigger price wars with competitors in the telecommunications market. Investors should assess the long-term impact of these promotions on Telstra’s revenue and market share. The competitiveness of the NBN market and consumer demand for internet services are key factors.