The thing is if you pick up players like that then, they don't then become those players generally. It's a big difference learning your trade at Brighton than it is at United.
Exactly. Not sure why this is lost on so many people. Your competition for you spot in the team is different at different teams. Some players need a season of first team football to settle in. Some need a lower pressure environment. Some come in and immediately displace their counterpart but at big teams its rare that a "nobody" comes in and does that.