Because the whole aim was to get away the existence of God, therefore all the Vedic literature was . . . were interpreted by Śaṅkarācārya in his own way. Still it is going on. That process is still going on. Although there are many, I mean to say, explanation of Vedānta-sūtra by the Vaiṣṇava sampradāyas, just like Rāmānujācārya, Madhvācārya . . . every Vaiṣṇava sampradāya has his own explanation of Vedānta-sūtra. Don't understand Vedāntist means the monopoly by Śaṅkara-sampradāya. No.
But people in general, they understand Vedāntist means Śaṅkara sampradāya. Because the devotee class, they do not give much importance to Vedānta. Because they read Śrīmad-Bhāgavatam, and Śrīmad-Bhāgavatam is accepted by the Vaiṣṇava-sampradāya, especially by the sect of Caitanya Mahāprabhu, as the real explanation of Vedānta; therefore they do not give any other explanation of Vedānta than Śrīmad-Bhāgavatam.