Nid rhannau bach o’r economi yw’r diwydiannau a’r sefydliadau sylfaenol hyn. Yn ôl amcangyfrifon, gallwn briodoli pedwar o bob deg swydd a £1 o bob £3 sy’n cael ei gwario gennym i’r diwydiannau a’r sefydliadau hyn. Mewn rhai ardaloedd o Gymru, yr ‘economi sylfaenol’ hon yw’r economi.
These foundational industries and organisations aren’t small parts of the economy. Estimates suggest they account for 4 in 10 jobs and £1 in every 3 that we spend. In some parts of Wales this basic ‘foundational economy’ is the economy.