Why doesn't Yitzchak chastise Avimelech about the wells the way his father did?

Question

In parshat Toldot, we see a number of situations that occur to Yitzhak that are (almost) identical to those that occurred to his father, Avraham. Examples:

• There is a famine. Yitzchak seeks to go to Egypt, except that G-d tells him not to. (Genesis 26:1-6)
• When he goes to Gerar, he tells everyone that Rivka is his sister instead of his wife. Same excuse or for the same reasoning that Avrham said that when he went to Gerar. (Genesis 26:7)
• The people stuffed up the wells that Avraham dug, and they then stole the wells that Yitzhak dug himself. (Genesis 26:15-21)
• Avimelech makes a covenant with Yitzhak like he did with Avraham. (Genesis 26:26-31)

When Avimelech made the covenant with Avraham, he reproves Avimelech about the wells that he / his people stole. Yitzhak doesn't do as his father did. Why not?

Answer 1

Based on the way that the p'sukim are written it appears that the servants of Avimelech did not try (this time) to seize the wells by force. This time the used "lawfare" by claiming that the water was legally theirs. Thus, Avimelech did not try to defend himself by saying that he had never been told about it. That is also why Yitzchak just moved elsewhere to dig a different well. He did not want to get involved in lawsuits.

As I say in Is Ber. 26 in the proper chronological place?

We have the medrashim that Eisav was already leading a band of men. These men were the "family defense force". That is why the servants of Avimelech were unable to attack Yitzchak and instead resorted to "lawfare". That is suing him and claiming that the water in the wells that he dug belonged to them.

Answer 2

It is possible that Yitzchak did rebuke them, as it says in Bereishis 26:20:

וַיָּרִ֜יבוּ רֹעֵ֣י גְרָ֗ר עִם־רֹעֵ֥י יִצְחָ֛ק לֵאמֹ֖ר לָ֣נוּ הַמָּ֑יִם וַיִּקְרָ֤א שֵֽׁם־הַבְּאֵר֙ עֵ֔שֶׂק כִּ֥י הִֽתְעַשְּׂק֖וּ עִמּֽוֹ׃ וַֽיַּחְפְּרוּ֙ בְּאֵ֣ר אַחֶ֔רֶת וַיָּרִ֖יבוּ גַּם־עָלֶ֑יהָ וַיִּקְרָ֥א שְׁמָ֖הּ שִׂטְנָֽה׃

I believe that Netziv intends to say this here:

כי התעשקו עמו – היה בזה רוב דברים אשר הוכיח יצחק כי מים חיים המה, והמה נתווכחו עמו, וזה מיקרי ״עשק״... ויקרא שמה שטנה – אחר שראו שעלה בידם לגזול הבאר בטענה בדויה, הוסיפו לגזול בלי טענה רק עמדו לשטן, וגם אז העלימו השרים עין.

Answer 3

One answer is, that it might not have been the same Avimelech!

The Sefer HaYashar, Chayei Sarah tells us that around the time Sarah died Avimelech died at the age of 193 and they anointed Benmelech / Nimloch his son (then aged 12 years old), as his successor. And they called him Avimelech as that was their custom.

It writes:

ויהי לתקופת השנה וימת אבימלך מלך פלשתים בשנה ההיא, בן מאת שנה ושלוש ותשעים שנה היה במותו. וילך אברהם עם אנשיו ארץ פלשתים וינחמו את כל בתי אבימלך וכל עבדיו, ויפן וישב אל ביתו.

And it was during this period of the year, Avimelech king of the Philistines, died in that year. He was one hundred and ‎ninety-three years old when he died. And Avraham went with all his people into the land of ‎the Philistines and they consoled the household of Avimelech, and all his household, and then he ‎returned to his home.‎

And then...

יהי אחרי מות אבימלך ויקחו על אנשי גרר את בנמלך בנו, והוא בן שתים עשרה שנה וימליכוהו תחת אביו. ויסבו את שמו אבימלך כשם כשם אביו, כי כן משפטם לעשות בגרר. וימלוך אבימלך תחת אבימלך אביו, וישב על כיסאו.

And after the death of Avimelech the people of Gerar took his son Benmelech, who was then ‎only twelve years of age, and they made him king in his father's place; and they called his ‎name Avimelech after his father, for such was their way of doing in Gerar. And Avimelech ‎ruled in the place of his father and he sat upon his throne.

Therefore, Yitzchak didn't need to reprove him because he wasn't the same Avimelech from the time of Avraham!