While Macs are good, it's better to have more variety and different design compromises to choose from. Especially, if you run Linux as only a tiny proportion of sold models will have trouble-free hardware. So I applaud this move by VAIO.
The same frustrating thing happens in the smartphone market. Practically no small phones left. Interestingly, the Xperia Compact is one of those few. Also by Sony (VAIO is part-owned by Sony only).