International companies (except Vodafone) have all left India. Look at Telenor, NTT Docomo, MTS and CK Hutchinson. For example, Telenor has a massive presence in Pakistan and Bangladesh (in Pakistan it is called Telenor and in Bangladesh it is called Grameenphone), in addition to Southeast Asia and its home region of Scandinavia (Telenor is from Norway). But it failed miserably in India. Fortunately the Telenor network merged with Airtel, so Telenor subscribers were moved to Airtel. Many other companies weren't so lucky. Videocon Mobile was another big failure.