There is a difference. Thank you for correcting it. I already answered it initially.
What you are suggesting is we should be equal in distribution according to demographic
and the rich Bumi is exploiting the allocation of these poor Bumi?
A shorter answer:
A rich <insert race> will give back to it's own less fortunate kind because we are a self segregated society bounded by race and religion.

Example:

Middle Income Ahmad got good education because he got tongkat to University making him smart.
Middle Income Ahmad got tongkat in loans making him able to start his own business.
Middle Income Ahmad also got tongkat in housing making him saving his money more.
Middle Income Ahmad got rich in the span of 10 years, now people call him Rich Ahmad.

Now,
Rich Ahmad need to hire workers for his new project he got from tongkat.
Rich Ahmad hires Middle Income Abu and Middle Income Hassan to help with the project.
Middle Income Abu and Middle Income Hassan hires Poor Ali, Poor Sufian, Poor Hafiz and Poor Mohd to work for them.

In 10 years time,
All the Middle Income becomes Rich and all the Poor becomes Middle Income.
Rich Ahmad is getting richer, don't forget that. We call him Mega Rich Ahmad now

So,
Mega Rich Ahmad now opens up another tongkat business producing lots of newly Rich guys and Middle Income guys
Now Rich Abu and Rich Hassan tongkat summore.

Now
The son of Mega Rich Ahmad wanna marry a Poor Syed daughter, his dad approves and financed a grand wedding
Mega Rich Ahmad hires Moderate Income Hussein as caterer, Middle Income Halimah as Mak Andam, Rich Azman as Event Planner.
Now all the people working for Mega Rich Ahmad's son wedding hires a lot of Poor individuals for work.

And,
Family of Poor Syed also benefited from marrying the Mega Rich Ahmad by getting some work or small projects
Poor Syed's family boosted their statues to now as Middle Income Syed.

So in short, wealth trickles down to it's own society in a long run, this is why race based tongkat policy works.
It is a way to get of from the poverty cycle.

If Middle Income Ahmad does not have a university entry approved, his bank loans rejected, his housing quotas rejected
Abu, Hassan. Ali, Sufian, Hafiz, Hussein, Halimah, Azman and Syed would be stagnant economically.

On your first bolded, you think if ALL bumi gets to enjoy those privileges still got so many b40 bumi nowadays?

The bumi policy mainly only benefits the rich bumis, those who do not have connections don’t really get anything.