When games are selling well (fresh out the gate), they rarely received significant discounts. Game developers want to cash in on the popularity of new games for as long after launch as they can. Typically once sales start to slow a bit, the game will see a discount to give those who were on the fence about buying it the push needed to jump

Source: Hot Hardware – Fallout 76 Is Already Being Heavily Discounted Amid Poor Reviews And Refund Requests