Good read, (relatively) straight from the horse's mouth (U.S. GAO)

"Data on the other two indicators, wage earnings and employment growth,
are not consistent with the existence of a shortage in the occupation.
First, our analysis of BLS data from 2000 through 2012 shows that the
median weekly earnings in the pilot occupation decreased by 9.5 percent
over the period (adjusted for inflation), or by an average of 0.8 percent
per year.33 According to economic literature, a positive growth in wages is
required for a shortage to be present. So, by absolute standards, the
findings for this indicator do not appear consistent with a shortage for
pilots during the time frame"

"... airlines may have to make considerable operational adjustments
to compensate for having an insufficient number of pilots.
To address such a situation, opportunities exist for the airline industry to
take action to attract more pilots. For example, airlines can continue to
take actions that will promote aviation as an occupation—such as through
employment pathway partnerships with pilot schools and additional career
and financial support for pilots as they build flight hours for an R-ATP or
ATP certificate. In addition, mainline and regional airlines could work
together to shift some of the burden of increasing training costs from
students as has been done by some European airlines and adjust
contractual agreements between mainline and regional airline partners to
help regional airlines increase revenue. Furthermore, with the mandate to
increase pilot qualifications for airline pilots having only recently gone into
effect, opportunities exist to develop new training methods and pathways
for students to gain experience relevant to an airline environment. It is
unclear at this point what adjustments could occur within the pilot training
system that would help to respond to these stakeholders’ concerns about
the current regulations, or if government action may be necessary to
enable certain changes."

And Sully is an amazing spokesperson for the profession.