I don't think the malls "got rid" of either one. Music stores and bookstores just couldn't deal with the business realities of the post-amazon world. I'm certain the malls would have been happy to take their rent money.
I loved going to arcades. They're still somewhat around here (including the largest arcade in the US, Galloping Ghost), but they're almost exclusively older games at this point, and they're mainly free-play. Which is still good, but it used to be cool having a stack of quarters and seeing how far you could stretch them.
In my hometown in Australia, there was a shopping area (small chain grocery store) and a newsagent. Across the road was a foodhall, real estate agent and adult book store. Once the book shop went, the area struggled to keep customers and it became fast food and people travel to the next suburb for groceries. Maybe all shopping centres really need is access to porn?