I think you misunderstood the comment. I think he stated that they have produced 500 TB2s and are planning to produce 240 next year. on Akinci, 40 would be the accumulated total number at the end of next year.
Correct me if I am mistaken, but please double check your source.
According to Bloomberg, Romania is planning to buy UCAVs worth $300 millions from Turkey. This could be around 40 TB2 (If they are intending to buy TB2)
Iron Dome was specifically developed to engage such threats. Thus, economics was very important. A Tamir missile costs 100k. Hisar and Siper will be too expensive to use against artillery shells. Another low cost system need to be developed