This study examines the phenomenon of English-medium instruction (EMI) in higher education through the lens of neoliberalism and linguistic entrepreneurship. Although commonly reported benefits of EMI include improved English proficiency and better job opportunities, there is a lack of research critically examining the relationship between EMI and these presumed benefits. Through the lens of linguistic entrepreneurship, this study compares engineering students' perceptions of the linguistic and professional benefits of EMI before, during, and after study in Turkey. Employing a mixed-methods design, data were collected from prospective, current, and former students via questionnaires, interviews, and focus groups. The findings revealed significant differences between groups regarding perceptions of learning and professional outcomes. This paper demonstrates how students' perceptions of EMI are shaped by the ideals of linguistic entrepreneurship and suggests that the professional benefits of EMI may be more nuanced than assumed, with implications for EMI pedagogy and policy in higher education.