I bet the TB2 has reduced the russian arms sales potential by at least 40%..
The TB-2 had had a legendary performance in Syria but the western media played it down in order to hide their incompetence, plus Turks were fighting their beloved baby the PKK/YPG.
Although the TB-2 reportedly have had many losses in Libya, it was one of the main reasons that ended the siege of Tripoli as a result securing three bases for the Turkish Navy and AF.
Video footages of the functioning Pantsir ADS, the pride of Russian defence industry, must have been so embarrassing for them that they started featuring the drone in their presentations of new weapons, also to be sure, they featured Akinci as an adversary for their "Checkmate" fighter.
Azerbbaijani TB-2s on top of that have obliterated a handsome chunk of the Armenian army and equipment, which primarily uses Soviet/Russian equipment.
Despite all the bad reports, smearing campaigns, downplaying, undermining, and claims of downing an insane number of TB2s, Neither Russia, nor LNA, nor Israelis and their buddies in the UAE, nor Armenians, nor the anti-Turk axis could prevent the TB-2 from being the "Kalashnikov of drones", securing sales in Poland and Ukraine amongst at least another dozen of buyers, which has angered Moscow.
I don't think that there will be any more of that because the drones have proven themselves on the battle grounds in many different terrains, climates and situations.
The best advertisements were really from the ones who were complaining about them yet trying to downplay their role at the same time, also, the TB-2 are "so 2011" now and Turkey has upped it a gear or two. Akinci, Aksungur, Simsek kamikaze, Göksungur, Kizilelma, Kargi are just a few that are going to change things from the roots in conflicts and wars.
Turkey has about a dozen more projects regarding unmanned systems that the public has no or very little info about. Watch out!