Why laboratory glassware shatter in big pieces?
Kitchen glassware is made to contain large internal stresses, so it shatters into small, non-dangerous pieces. That is hard to achieve with Duran etc., because that stuff has a small thermal expansion coefficient, just so that it does not break under large temperature changes.

I expect that the kind of kitchen glassware that is supposed to withstand large temperature changes also breaks into rather large pieces.

And yes, glass is highly elastic. Elasticity is effectively the only mechanical property it does possess, before breaking. ;-)