LTK TECH's video: My Problem with Sony A7iii and Canon 5DMark IV Cant DECIDE

Hello I cant decide which one to keep. I bought the 5d4 originaly because i have had a canon 70D for 4 years and its great but now the more video i do i get more request to take stills. I got the 5d4 for still and 4k unfortunately the only thing i didnt research well enough was the 4k MJPEG is useless. Its cropped 1.74 recording and to top it off the recording file size its too massive to be usable let alone have enough storage for it. This is where i really started doing research on the Sony A7iii. Great for video usable 4k plus 120FP so that great. Downside to Sony is not enough glass and the one that is out there is so expensive compared to CAnon L glass. The canon is easily learned and very intuitive and pretty much all canon lenses are amazing. But they lack sony a7iii technology with IBIS and Eye AF idk. I feel im 50/50 and i just cant decide. HELP ME LOL.