Ultrasonic welding can handle most plastics assembly applications. Other friction-based processes, such as vibration welding and spin welding, can usually tackle the rest. However, that necessitates investing in three separate machines at considerable cost.
The one constant thing about technology is that it is constantly changing and evolving. Don’t think so? In that case, ask the people who rushed out to buy the latest iteration of a smartphone, but then find themselves standing in line waiting to purchase the latest new-and-improved version just six months later.