speaking of which, bubbles!
According to wikipedia, A bubble is a globule of one substance in another, usually gas in a liquid. Due to the Marangoni effect, bubbles may remain intact when they reach the surface of the immersive substance. Soap bubbles can make rainbows in and on itself, what can be seen by observants surrounding it, with the help of sunlight or artificial lightning.
But, there are other types of bubbles, and anyone is susceptible to be raised or live in one. This type of bubble separates one from society, bringing the possibility of a lost of important strings that were possible to everyone outside the bubble, either the lost of chances to form those strings, or the cut of logical and emotional attachment of both sides of that lining.
Of course there are ways to break bubbles, it requires effort, as expected, it’s hard, it’s somewhat dangerous, and one will most likely be affected negatively by doing so. To leave a social-dynastical bubble, one must break their pretenses, know the world, go against everything that they’ve experienced before, just so can see the other side of the fence, and that is what hurts the most, going against the tide means going against something that supported one all their life, monetarily or emotionally, and that will most likely deny the descendant -at least in the beginning- , because such bubble wasn’t made out of nothing, it was built in a set of emotion, presets and knowledge that had much effort built into. Seeing that bubble implode out of thin air hurts, even more that the inheritee will sustain in his whole journey, collectively, and the builder will take the pain out of once, instead of with time -in case of the pupil-, and that pain will sore and scar one for life, reminding and draining the force of the mentor their whole life, until they finally drop dead or finally give up into madness.
And that strength that frank never had.