One should first understand how the income of big earners puts them in a position of strength, and give a huge potential to keep increasing in wealth.
Let us say, this person (not only celebrities) has a major income from whatever means (winners in sports, big movie hits, sponsorships, property sale, selling app/company, technology, big sales orders, bumper harvest, inheritance…). Now compared to the income, their expenses including taxes are low, even if enjoying luxurious lifestyle. What happens to the extra that is not spent? That amount can be invested somewhere, and it breeds more income (over and above the expenses). When this extra is not spent, it only makes more wealth. It cannot be stopped except by doing some awfully dumb decisions.
So now the wealthy person doesn't have to work for money since all his needs are met. There is plenty of time available for thinking up other plans and develop ideas which they may never had the time nor vision for before they become wealthy. Now utilizing this time, they can produce more wealth than investing somewhere. So the person becomes even richer because of putting the money to work for them, instead of them working for money.
Now what is the reasoning that these people be taxed more or limited in producing more? Is it because others are not catching up and want to pull them down? Or because the others are rather lazy or work only like 9 to 5, and don't think of anything other than getting a salary by working for/under others who most likely work many more hours than the regular salaried person?
Limiting may be acceptable in a communist country, where basically they spread poverty amongst almost everyone. In our country it will not be acceptable.
In any case, those with greater capacities often are involved in motivating or promoting others into better situations by opening boxing clubs (eg. Mary Kom). Others may open factories and provide employment, others run schools and training institutes for underprivileged ones, etc. Yet others may become greedy, but we don't want to talk about that now.