Everclear co-founder Arjun Bhuptani, speaking about chain abstraction at the Abstract Summit today, said that applications are trying to use their own technology stacks, including projects like Arbitrum. This allows for customization to meet specific needs, but also increases the cost for other applications to use the same technology stack. Furthermore, the cost of acquiring users who need to bridge their assets from other chains is much higher than the cost of deploying directly on those other chains. Therefore, applications naturally have a preference for deploying directly on other chains instead of relying on bridges. Chain abstraction can address both of these issues to a certain extent: it allows applications to retain their existing technology stacks while also reducing costs.