The Samsung Galaxy S20 series was launched back in February, and it's now been about three months since the phones hit shelves. Sales numbers are out, and it would seem that the S20 phones have sold considerably less than the S10 series did over the same period last year.
https://www.notebookcheck.net/Galaxy-S20-series-sales-numbers-are-worse-than-the-S10-series-S20-the-people-s-choice.466485.0.html
There are only two markets left where Samsung still dominates market share for Android phones--it's home country South Korea and North America where the carriers protect Samsung from competition against Xiaomi, Honor, Huawei, and OPPO--brands all offering phones with more innovation, better engineering, and superior build quality than Samsung phones at far more affordable prices. Samsung has been coasting for the last five years, releasing the same devices every year with only incremental improvements and design changes. Samsung doesn't deserve the market share it still has but they clearly won't improve their phones until they are faced with competition in North America where market dominance and high prices guarantee comfortable profits for Samsung.