Well I am a retired civil servant and I do not have commercial business experience.
My reasons for being sceptical are that in my own observations of other people's business operations in the UK:
(a) the quantities of applicable law are such that it is very nearly impossible to be complaint with them all
(b) trying for full compliance renders one's business uncompetitive against competitors who are less fastigious
(c) for small companies and individuals it is often all about:
(i) finding a slot in the market
(ii) obtaining contacts and presence
(iii) achieving critical turnover
(iv) breaking even and hopefully
(v) actually making a profit)
with worrying about being taxed being left until later.
After all if they can not do the former (i to v), there is no profit to be taxed and what with limited
liability the tax man only has an insolvent company that can not pay forwards the sales tax.
(d) for large companies, risk management is applied to the possibility of infringements:
(i) how much will it cost to comply
(ii) how likely are we to be caught and
(iii) what is the penalty for non complaince
Unless (ii) x (iii) divided by (i) reaches a threshold they may not bother trying for compliance.