That is exactly what the text says. I have interpreted that verse correctly.
Not only does it speak of everlasting righteousness on earth but it also speaks of AN END OF SINS (along with four other conditions). Has there been an end of sins in Israel or anywhere in the world? No. Rather evil is getting progressively worse right now. But an end of sins means an end of sins.
Unless Daniel 9:24 is interpreted in light of the establishment of the perfect and righteous Kingdom of God on earth, it cannot be said to have been fulfilled. So here is the passage on which you and others should focus:
ISAIAH 11: EVERLASTING RIGHTEOUS UNDER CHRIST
And there shall come forth a rod out of the stem of Jesse, and a Branch shall grow out of his roots:
2 And the spirit of the LORD shall rest upon him, the spirit of wisdom and understanding, the spirit of counsel and might, the spirit of knowledge and of the fear of the LORD;
3 And shall make him of quick understanding in the fear of the LORD: and he shall not judge after the sight of his eyes, neither reprove after the hearing of his ears:
4 But with righteousness shall he judge the poor, and reprove with equity for the meek of the earth: and he shall smite the earth with the rod of his mouth, and with the breath of his lips shall he slay the wicked.
5 And righteousness shall be the girdle of his loins, and faithfulness the girdle of his reins...
9 They shall not hurt nor destroy in all my holy mountain: for the earth shall be full of the knowledge of the LORD, as the waters cover the sea.
10 And in that day there shall be a root of Jesse, which shall stand for an ensign of the people; to it shall the Gentiles seek: and his rest shall be glorious.
This will only happen when Daniel 7:13,14 is fulfilled:
13 I saw in the night visions, and, behold, one like the Son of man came with the clouds of heaven, and came to the Ancient of days, and they brought him near before him. 14 And there was given him dominion, and glory, and a kingdom, that all people, nations, and languages, should serve him: his dominion is an everlasting dominion, which shall not pass away, and his kingdom that which shall not be destroyed.
This is when there will be an end of sins and everlasting righteousness.
Another poster also referred to the sacrifice of Christ, but Daniel 9:24 does not say "everlasting righteousness to those who believe on Christ"! And in fact since all Christians continue to have the sin nature even after they are born again, they do not have everlasting righteousness until the Resurrection/Rapture. In any event, that is not what Daniel 9:24 is talking about.