No, Prince William is set to inherit more than his younger brother, Prince Harry. The difference in their inheritances is primarily due to their respective positions in the line of succession to the British throne.
As the eldest son of Prince Charles, who is the heir apparent to the throne, Prince William is positioned to inherit a more significant portion of the royal estate and wealth. When Prince Charles becomes king, it is expected that Prince William will become the next in line and eventually inherit the throne himself.
On the other hand, Prince Harry, being the younger son of Prince Charles, has a more distant position in the line of succession. As a result, his inheritance is not expected to be as substantial as that of his brother. Additionally, Prince Harry has chosen to step back from his royal duties and pursue a more independent life, which further impacts his access to the royal wealth.
It's worth noting that the exact details of the royal inheritance and financial arrangements are private and not publicly disclosed. The majority of the British royal family's wealth comes from private sources, including properties, investments, and inheritances from previous generations.