Sixers, make amends for two years of arena turmoil. Revitalize Market East.

The Sixers owe Philly an apology.

But short of that, they can make amends by prioritizing the development of East Market Street ahead of the new sports complex they’ve decided to build along with Comcast Spectacor in South Philly.

Team owners blindsided us with the about-face they announced Monday. To make things worse, they never even bothered to publicly ask forgiveness for the turmoil they put the entire city through over the last two years. Their now-nixed Center City arena caused a whole lot of unnecessary tension.

It’s going to take a minute for us to just shake this off. Friendships broke up over it. Protesters got dragged out of City Hall. Tears were shed. The thought of the team possibly relocating to New Jersey upset a lot of fans. City Council wasted an enormous amount of time on it, time that could have been focused on more pressing issues facing the city. Mayor Cherelle L. Parker and city officials who supported the proposal expended major political capital trying to get it approved.

But after Monday’s news conference at City Hall, we have to try and put that in our collective rearview mirror. We have no choice but to focus on the positive — which is that the team, along with Comcast Spectacor, has promised to build a state-of-the-art sports complex in South Philly that will cause significantly less congestion and angst than if it were built adjacent to Chinatown.

And instead of abandoning Market East, both entities have agreed to work together to develop it.

Prioritizing Market East development is a good way to make amends.

Whatever it is the Sixers and Comcast come up with, it can’t happen soon enough. The Market East corridor is in free fall and needs every bit of investment it can get, especially on the heels of Macy’s announcement last week that it will close in March.

The eclectic Giant Heirloom supermarket at 801 Market St. shut its doors last month. The Fashion District continues to struggle, despite its $350 million facelift and post-Gallery rebranding. The new developers really need to rethink the entire space: Keep what’s working — like the movie theater — but focus on revitalizing everything else.

Market East needs new residential construction as well as out-of-the-box commercial development. Parker often points to the Battery in Atlanta as an example of how Philly could bring life to a new sports complex. Market East would benefit from an influx of new businesses such as a Battle and Brew, which is a gaming/dining experience, and other interactive entertainment venues such as escape rooms or bowling.

I hope they won’t overlook the need for more outdoor green space, too. The area is dreary and depressing. Walking along Market East needs to be a pleasant experience — not one where you pray you won’t get harassed, or worse.

Parker and Council President Kenyatta Johnson did the best they could on Monday to put a good face on the Sixers’ stunning change in plans.

But team owners revealed by their actions that they are all about their basketball team and profit, not necessarily what’s best for everyday Philadelphians. If they were, they would have OK’d a much larger community benefit agreement payout than the $60 million in the original 76ers Place deal and also allowed the city to keep the money after they changed their minds. Parker shouldn’t have to “start from scratch” to negotiate a whole new arrangement.

But, as I pointed out before, we can’t dwell on the past. All will soon be forgotten if the Sixers and Comcast keep up their end of the deal and come up with something to breathe new life into Market East.