I think that we have to accept that the era of the 1980 and 1990 have gone.
Why were those eras good.
Lower migration it was before the large boom in people ( most are not net contributors ie earning above 50,000)
Oil revenues
Before we had the costs of all the various Middle East wars.
Lower bureaucracy so lower costs
Fewer consolidation of companies into these large offshore conglomerates
More onshore British companies that remitted taxes to the UK - think of how much revenue leaches abroad
Fewer people remitting monies earned abroad to various countries
Fewer billionaires who pay proportionately little tax as they gain wealth that is never realised eg they refinance to release funds
Everything once British is now foreign owned
High cost of servicing public sector pensions. Private sector earn slightly more but they are actually paid miserably when lack of decent pensions are taken into account. The cost of financial advice is 1% of all pension holdings and £100,000 of pension pays out an average of £5,000 per annum so a £30,000 pension costs 600,000. As for self employed they live better before retirement but have dismal prospects on retiring hence many don’t.
Labour and Conservative Gov squandered oil revenues when they shoud have invested that money.
We have had pointless wars we still are paying hugely for the Ukraine. We are for alll intents and purposes currently at war.
So that is why life is not that great and it’s percolating quite high up the food chain.
As an example
There are many lawyers with poor wages - they start off as paralegals for several years on not much more than minimum wages and eventually have their SQE funded to progress and qualify but are pushing late 20s with very little pension. Out of London lawyers are earning 50,000 to 70,000 with little pension ( 5 % contribution from employers) Forget the few highest firms where you have to be extremely lucky to get in as well as have a perfect CV!
Accountant trainees with eg first class degrees even start on about 30,000 and it goes up really slowly over 3 or 4 years and that is in top firms. Once qualified they earn the princely 55,000 ( about 60,000 in London) despite having done 15 post degree exams and not having much free time
Juxtapose that with earning in the US where starting salaries for those professions are 4x as much and it shows we are really poor comparatively here.