Doubtful, this site will only be around for as long as d2 is relevant. Battle net 1.0 will be shut down within the next 5 years and blizzard will only keep d2r servers up until like 2035 or so. Overwatch made them a ton of money and they only kept the servers up for what, 5 or 6 years max?
This site provides other services that aren't restricted to d2 and still has the potential to expand.