The list of Standards in the link are more Business Governance Standards, which are a bit different to Standards for Metrics. We couldn't do anything without standardisation of metrics, but Business Standards are not always necessary. Many companies perform perfectly well without adhering to any BSI standards. All these standards are a bit of a money making business, I would question why Standards are so expensive, probably on average £100 each, They should be available for a nominal fee. Then you have all the accreditation fees, the annual fees, the additional staff to maintain the standards. If you have really good staff who know what they are doing, you don't need business governance standards. Companies now often request that any suppliers have accreditation to various standards. and won't deal with companies who don't. it perpetuates the business. You can get a BSI accreditation for producing rubbish products, as long as you document how you make your rubbish product and follow the process during the audit. These standards don't measure the quality of what is being made, only the process put in place.
In many cases, Business standards are required these days, because industry is full of inexperienced people who haven't a clue what they are doing, so they need a guide to follow. Everything in business is being re-invented today and given a new sparkly name, but it's what good successful companies have been doing for years without having a Quality Management Systems.
Despite my slightly cynical view, overall, I think they are a good thing and I shouldn't complain, It was my source of income for many years.