Then there is the capacity issue. Serial production is never a strength of India's defence industry, a problem that could be traced back to India's overall weakness in manufacturing. India would be hard pressed to make a dozend aircrafts a year, leaving hardly any space for export.Finally there is the Gripen factor, an aircraft that is about the same size as Tejas and uses the same engine. However, there is where the similarities end. Gripen is in every way a much much better aircraft and doesn't cost much more!
Realistically the Tejas/LCA project, running later by ca 20 years, has basically become a tech-demo project, don't think there is anyone within India's armed forces who is counting on this bird to do much. As for export, no chance at all.