You can't squat and redirect subreddits to external sites. I have personally been granted mod of a subreddit that had been redirecting to another website. Its a

You can't squat and redirect subreddits to external sites. I have personally been granted mod of a subreddit that had been redirecting to another website. Its against the rules and the subreddit will be banned at which point anyone can use /r/redditrequest to take it over. Even if that did work however, people would create adjacent subreddits that would end up to be defacto sureddit, for example /r/competitiveoverwatch.