The software that we use is Ksuse.ru. It has reasonable prices, background removal, AI. Also, we add mov overlays, intro/outro, 3d animations, music in it. The program has a lot of features, which can be confusing at first.
The price depends on camera number. For example, the license for 6 cameras array for 1 event cost 19 USD or 639 USD for the perpetual license (support is included for the first year).
Another popular solution is Breeze.
735 USD for the license for 6 cameras array. They have an email support. There are a lot of guides and users of this software.
You can also check Xangle software. 6 cameras license cost from 499 USD/year. It has a great UI, but support is extra 4000 USD/year.