If own sign/exaltation is reserved for high birth, how can low birth even expect to climb top
If you think about it, most charts are constricted by birth pattern.
Low birth:
1.Lack of emotional safety > moon in other signs except taraus/cancer.
Confidence takes time due to lack of power > Sun isn't in aries/leo.
Needs to be wise through experience, and learn everything by oneself > Jupiter isn't in sag/pis/cancer
Lack of luxury/resource > Venus doesn't get own sign.
With this even 2nd, 4th, are afflicted or are weak. 9th takes time to open up.
Only exception or supporting might be Mars and nodes which doesn't completely depend on birth status but native. Thats why people say grit is main factor for succes.
Considering this, how can average-low birth do anything is their planet strength is only 50%. Exaltation, multiple moolatrikona are fairy tale. Rule of 5 exaltation for common to be king exist, while royal need 3. How can common even have 5 exaltations when those planets also shows birth pattern which aren't possible in common house hold.
So, what leads low birth to finally achieve something, actually big/royal level? Just multiple rajyogas stacking up? Even that gets constricted by Desh Kala Patra rule.