Try naming a game from either franchise that has had as much of a cultural impact as Mortal Kombat.
Hint: There's none.
Also, video games based on licensed properties are almost always terrible, and any bad game could significantly damage the IP value for years. Why else do you think everything has gone downhill for Superman since the nightmarish N64 game?
Cultural impact doesn't matter; sales figures do. Mortal Kombat is the only one of those arcade IPs that can potentially compete with a quality Star Wars/Marvel game, but you can't release a Mortal Kombat game every few months. You could easily release a new Star Wars and/or Marvel game every few months because there's a far wider variety of game types available.
Your second sentence is wrong. There have been some terrible cash grab IP games, but there have also been plenty that have performed exceptionally well. Star Wars has had numerous successful games for 30 years now along with some terrible ones -- those terrible ones certainly haven't affected the value of Star Wars. There was a highly successful and critically acclaimed Spider-Man game just two years ago. It sold 4.3 million copies in 3 days; Sony may have made more money off that game than they did from Spider-Man: Homecoming. An Avengers game was released last month and was the best selling game of the month, and it wasn't even based on the MCU. There was a Star Wars game released last fall that sold over 10 million copies.
I feel like you're unaware of how massive the video game industry is today. It absolutely crushes both the movie and music industry in revenue; it's not the 1990s.