Philips and many other reputable brand like Sennheiser and AKG knowing what they are doing on their product.
Good sound isolation is bad to the end user. That is why the control the sound isolation at <85% below.

Only those new, desperate, unresponsbile company would make it totally isolation or bloated bass or sometimes hired few "gunsmen" doing marketing for their product. This tactic widely use by American and Chinese company.

Normally Sony dont let you listen to their product, they just let you take a look from outside of the package...