Adding concise background: "In a positive development for the Estonian telecom sector, Elisa, a key player in the industry, has achieved a significant milestone."
Sentiment highlighting: The news of Elisa acquiring 50,000 new clients in the first nine months of the year reflects a positive growth trend, showcasing the company's strong performance and appeal to customers.
Synthesizing enhanced sentence: "Estonian telecoms company Elisa has achieved a major milestone as its customer base has surpassed 400,000, with an addition of approximately 50,000 new clients in the nine months of this year. This growth marks a positive trend for the company and reflects its strong performance in the market."