The problem is that if you do this every time, you are effectively entrenching the current power structures of society. This isn't a bad thing if those power structures are good - or necessary. But ... it's obvious that repeatedly doing this benefits a specific class of individuals (capital holders) by capping their downside. Capping the downside of existing capital holders also caps the upside of non-capital holders by creating an uneven playing field and eliminating opportunities available to those with "clean" balance sheets.