I don't have time to type much, but let me make this necessary clarification:

Denying female children inheritance is not an Igbo culture. The only inheritance female children are not permitted to obtain are ancestral lands. Ancestral lands are family identity. If a female child inherits ancestral land and she is married, being that she is required to change her surname to her matrimonial surname, the identity of the family is automatically lost. That is why, where a man doesn't have male children, at death, such properties are passed to closest relatives who will sustain the family identity instead of the girl child.

Any family that doesn't have a land or property in their native home does not really belong to that community. That's why a land as small as 10*15m^2 can cause trouble that can lead to bloodshed. In addition, such lands cannot be sold.

If ancestral land is the only inheritance a man left behind, then he left nothing but name. Don't tell me that the daughters of Orji Uzor Kalu will not inherit company shares, real estates etc when he departs.

Modified
Think of it this way. Your surname is your family name. Your family name is your ancestral name. Your ancestral name is the name of your compound. Your compound is an address. Your address is your permanent identity. Wherever you go, you are identified by your family name. Your permanent residence which is your native compound is your permanent identity. The day it is lost, that's the day you become a foreigner in your home.

That's just about it. Both male and female is entitled to their father's wealth

what nonsense are you writing? in what world are ancestral lands open for female inheritance debate?