Why not to choose only open source hard- and software for ECG, EEG, MEG, SBC’s and things we need?

We could choose the PinePhone Pro, get our own Gerber files by ourselves and let manufacturer them by ourselves. There are other SBC’s available which are open source hardware. The same with OpenBCI modules and the WIFI shield. We are physiologists and not soft- and hardware developers. But hopefully all the issues we reported in …