I do not see where Sega could not do a turn around or have ever reached a point of no return. That said, some games released were better than others. However, in this day and age with android os, & the cost of production dropping (not talking about AAA titles here) they can chose to do a turn around. It will not be easy and it may require plenty of investors like through kickstarter or some other crowd funding but ultimately it can be done.