A lot of money goes to the US in IP licensing and services. We could make a big collective difference there.
Most of my software has been free and open source for years though I still pay money to Gaben for games.
If creatives can't use free software for some reason there are some alternatives to Adobe. Davinci Resolve is supposed to be excellent and is from Blackmagic who are Aussie(Melbourne) and have a lot of other cool high end gear. The Affinity Suite was from the UK but got bought by Canva who are Aussie founded(Perth) but not sure I would trust them and they look to have a lot of US VC. Also in the creative area Røde Microphones are Aussie(Sydney) vs companies like Shure from US.
I stopped all payments on Paypal and closed it but I had been meaning to do that for ages for other reasons. Amazon Prime went - they are a shit greedy anti-union, anti-Australian company anyway. No loss. Most streaming went over the last few years due to the great enshitification.
I am sure a lot of supermarket products are US owned but thankfully fuck all is made there.