If you were a 55 year old long haul trucker, you aren't going to be able to replace the income/benefits you had with a $7/hr (pre-tip) service sector job.
waitstaff isnt paid that much hourly. Its generally on the order of 2-3$ per hour.
edit: since im being downvoted i assume someone disagrees - here is a source:
from nolo.com:
>Employers must pay tipped employees at least $3.23 an hour in 2016, $3.38 an hour in 2017, and $3.52 an hour in 2018.
http://www.nolo.com/legal-encyclopedia/michigan-laws-tipped-...
Technically you can sue your employer if they wont pay you the difference if you dont end up making enough in tips to end up at or above minimum wage - in practice however, suing your employer is generally not a great way to stay employed
http://www.nolo.com/legal-encyclopedia/michigan-laws-tipped-...
Only way I know round UK min wage is to be self-employed, or one of the fake "self-employed" like some delivery drivers have had to become. Surprised the IR haven't slammed the door on that little scam yet.
That said, it's not uncommon to get at least minimum wage.
https://en.wikipedia.org/wiki/Tipped_wage_in_the_United_Stat...
No, they aren't. Many "low-margin, framented service jobs" of the type you list are often effectively sub-minimum wage (possible because they are usually independent sole proprietorships renting facilities from the entity that looks like their "employer") highly-saturated already, increasing the proportion of the population trying to work them will further crash wages.
Can they absorb another 10m (or however many there are) truck and van drivers who probably made quite a bit more? I know it won't be overnight, but it seems to be rapidly becoming a political rather than economic question.
Like must we learn to run at 20-25% unemployment instead of <10? We'd probably have to learn to stop viewing them as scroungers too and adjust welfare somewhat.
Who is eating at these restaurants that wasnt before? Why would they suddenly be hiring millions of people at restaurants?
Who is suddenly attending more fitness classes now that there is massive unemployment, to the extent that we need millions more fitness instructors?
Your suggestions dont make any sense whatsoever. If you had said Campbells soup company would be hiring you might be on to something, but in the face of millions losing jobs, luxuries like restaurants, fitness classes, etc certainly wont be seeing massive growth in demand....