If you went into your neighbor's house and killed some people there, you would be caught, put to trial, and sentenced.

If a country goes into a neighboring country and starts killing people there, the natural reaction from a civilized planet would be to, at the very least, ostracize the aggressor. It should never pay to invade other countries. Invading other countries should be an obvious path to a total destruction of domestic economy and prospects for the future.

In other words, it doesn't matter if your money paid to Yandex goes directly towards bombs and drones (it actually does, if you look at the ownership structure). What matters Russian economy as a whole.