First of all, Moran's identity
First of all, because of Moran's identity. Moran belongs to an ordinary woman and grew up with Lin Xiaoniang. So many aristocratic families simply look down on her, let alone marry her. I estimate that Plutocratic family may still be willing to accept her as his son's concubine, but few people will be willing to be his son's wife. Because the status of an ordinary woman in ancient times was relatively low, although Ming Lan was an ordinary woman like Moran, she was recorded in the name of her first mother, and her status was higher than Moran's. Master Sheng understood this truth, so he never thought of marrying Moran to Plutocratic family.
Second, Moran's character
The second is because of Moran's character. Moran grew up with Lin Xiaoniang, and we should all know Lin Xiaoniang's methods, so Moran was cultivated into a very arrogant but competitive role by her. This character is not suitable for marrying Plutocratic family. What Plutocratic family needs is a dignified and virtuous wife or a gentle and charming concubine. Moran doesn't meet the requirements at all, and even often insists on jealousy. If you marry her to Plutocratic family, it will definitely upset people's families.
Three, sheng master's daughter's heart
The third is because he wants Moran to be happy. Master Sheng really loves Moran, so he hopes to find the most suitable marriage for Moran, and all he finds for Moran are literati or scholars. Although Moran belongs to low marriage in the immediate future and her position is quite unworthy, in the long run, those literati still have great potential. Only after the accumulation of time, Moran can enjoy the treatment of the official wife. In Plutocratic family, being a scholar is better than being a concubine. At the very least, the children she gave birth to were also her first and second daughters.
Unfortunately, Moran didn't understand his father's mind at all. Instead, he felt that his father had blocked his beautiful marriage, and he followed his little mother and married Liang Jia, but he was unhappy all his life.