Surprisingly, India has one of the lowest divorce rates in the world. So it kinda works. Nowadays, "arranged marriages" are typically done using glorified dating sites that parents also have access to. People talk for months and get to know each other and their families typicallyThis model is outdated and not suitable for modern day societyI suppose. Not that long term relationships and dating is any better but I’ve seen a lot of arranged marriages ending up in divorce.
The thing about Indian/subcontinental culture which is different from places in the west is that parents are involved in thier children's life way into adulthood. The children stay with thier parents longer and they get supported longer. It's not considered some taboo thing to stay with your parents into your late 20s even. It's also expected that children offer the same support to their parents as they get old. So parents are involved a bit more in marriage decisions.