As an accountant, I can tell you that the accounting standards do require certain things to be recognised once they become more likely than not (e.g. provision

As an accountant, I can tell you that the accounting standards do require certain things to be recognised once they become more likely than not (e.g. provision for expected losses) but this is not extended to e.g. recognising customer relationships as an asset, mostly because these things are fuzzy and hard to measure and easy to game. If the company buys another company then they can recognise the difference between the purchase price and the company's assets as a new asset vaguely named 'goodwill' which covers things like customer relationships and everything else the accounting standards otherwise miss, but this isn't allowed otherwise.