UK MoD estimated earlier this year that Russia had about 6 serviceable A-50 airframes; the US alone has 21 E-3s, while France operates 4, and NATO collectively operates another 18 - and that doesn’t factor in other newer and more advanced AWACS platforms.
Russia lost over 10% of their operable AWACS fleet by losing one plane. Russia is HUGE. Their AEW assets were absurdly stretched before, and now they will be even moreso. Any losses they incur will degrade their overall strategic AEW capacity in a very real fashion.