TY JOUR TI NON-PRICE COMPETITION: MECHANISMS, INFLUENCE, AND WAYS TO IMPROVE INSTRUMENTS IN MODERN RUSSIA KW non-price competition KW competitiveness KW innovation KW product quality KW marketing KW loyalty programs KW Russian economy KW management strategies KW consumer preferences KW R&D investments JO Trade, service, food industry AU Demchenko, S.K. AU Podoprigora, V.G. AU Berg, M.S. AU Semenkova, V.Y. PY 2025 IS 5 PB Siberian Federal University