Gambling, resort, and entertainment company MGM Resorts International (NYSE:MGM) announced in a press release yesterday it is opening its BetMGM online casino in Pennsylvania. The mobile app used to interface with the casino offers approximately 140 simulations of casino and slot games.

MGM Resorts isn't stopping with ordinary (simulated) casino games, however, but is also pursuing regulatory approval for online sports betting in the Keystone State. The company expects the legal green light within the next several weeks, according to its press release. Slightly more than a week ago, MGM laid the groundwork for its current online gambling expansion by sealing a pact with the Pittsburgh Steelers football team, which BetMGM's chief revenue officer Matt Prevost called a "monumental partnership."

Online casino concept showing a man's hands placing poker chips on a tablet screen, while holding a pair of aces.

Image source: Getty Images.

Pennsylvania has become an important arena for competing online sports betting providers as the new form of gambling takes off across the U.S. BetMGM is challenging powerful rival DraftKings, Inc. (NASDAQ:DKNG), which currently holds 23% market share in Pennsylvania's sports betting scene. Sports betting handle rose 118% year over year in October 2020, reaching $525.8 million during the month.

In a somewhat cautionary note, net revenue for sports betting operators in the Keystone State has frequently been a tiny fraction of gross revenue, with $1.1 million in net revenue representing just 8.3% of the gross take in September, according to Barron's reporting.

The metric is extremely volatile, however, with net revenue amounting to 62% of gross in August. This highlights sports betting's newness in the United States, with sports betting in long-established international markets producing solid revenue.

MGM Resorts' move may well prove to be a good one for future growth in light of sports betting's skyrocketing popularity and spreading legality in America.