Paganism didn't develop into Abrahmic religions, as they haven't disappeared and most still exist and are still worshiped. cultural appropriation has occured, particularly in Christianity, due to conversion as the religions spread. The reason for this is mainly that such appropriation of cultural and religious traditions and symbols makes conversion easier. But often aren't accepted in a religious capacity. Yule logs originally held a cultural and religious meaning, but in the context of Christmas as celebrated by Christians is is nothing more than a holiday tradition with none of its original cultural or religious significance. And the actual traditional significance in its original context has been largely lost.
Pagan remnants aren't all that exist. Many have continued even after the introduction of other faiths to their homelands. It covers nearly all ethnic and folk religions like Buddhism, Hindu, Shinto, Satstana Phi, Shenjiao, Mugyo, Tengerism, tribal religions, ect. as well as recon and neo-oagan faiths such as Asatru and Wicca.